Why i have error in datatables when rendering it?

I have a Datatables and i want to see the data if APPROVE OR DISAPPROVE the status but when i APPROVE it or DISAPPROVE it gives me an error in alert box. so i need to press ok to see the data, but i want to remove the alert box. how can i do that?

it says DataTables warning: table id=services_table – Requested unknown parameter ‘null’ for row 0, column 9. For more information about this error, please see http://datatables.net/tn/4

appointment.js

$(document).ready(function () {
    const user = $("#user_type").val();
    var table = $("#services_table").DataTable({
        processing: true,
        serverSide: true,
        responsive: false,
        autoWidth: false,
        buttons: false,
        order: [[0, "asc"]],
        ajax: {
            url: "/scheduleList",
            error: function (xhr) {
                if (xhr.status == 401) {
                    window.location.replace("/login");
                } else {
                    toastr.error("An error occured, please try again later");
                }
            },
        },
        columns: [
            {
                data: "patient",
                name: "patient",
                searchable: true,
            },
            {
                data: "service",
                name: "services",
                searchable: true,
            },
            {
                data: "price",
                name: "price",
                searchable: true,
            },
            {
                data: "schedule_date",
                name: "schedule_date",
                searchable: true,
            },
            {
                data: "time_from",
                name: "time_from",
                searchable: true,
                render: function (data, type) {
                    if (type === "sort") {
                        return data;
                    } else {
                        return data === "00:00:00"
                            ? "00:00:00"
                            : moment(data, "HH:mm:ss").format("h:mm A");
                    }
                },
            },
            {
                data: "time_to",
                name: "time_to",
                searchable: true,
                render: function (data, type) {
                    if (type === "sort") {
                        return data;
                    } else {
                        return data === "00:00:00"
                            ? "00:00:00"
                            : moment(data, "HH:mm:ss").format("h:mm A");
                    }
                },
            },
            {
                data: "doctor_name",
                name: "doctor_name",
                searchable: true,
            },
            {
                data: null,
                orderable: false,
                searchable: false,
                class: "text-right",
                render: function (data, type, row) {
                    if (data.status == "0") {
                        return "PENDING";
                    } else if (data.status == "1") {
                        return "APPROVED";
                    } else if (data.status == "2") {
                        return "DISAPPROVED";
                    } else if (data.status == "3") {
                        return "Done Appointment / For Result Releasing";
                    } else if (data.status == "4") {
                        return "For Accounting";
                    } else if (data.status == "5") {
                        return "Done Transaction";
                    } else {
                        return "Unknown Status";
                    }
                },
            },
            {
                data: "created_at",
                name: "created_at",
                searchable: true,
                class: "v-middle",
                render: function (data, type) {
                    return type === "sort"
                        ? data
                        : moment(data).isValid()
                        ? moment(data).format("ll")
                        : "---";
                },
            },
            {
                data: null,
                orderable: false,
                searchable: false,
                class: "text-right",
                render: function (data, type, row) {
                    if (user == "patient") {
                        if (data.status == 0) {
                            return (
                                '<button type="button"  data-id=' +
                                data.id +
                                ' data-doctor="' +
                                data.doctor +
                                '" data-service="' +
                                data.service_id +
                                '" data-schedule_date="' +
                                data.schedule_date +
                                '" data-time_from="' +
                                data.time_from +
                                '" data-time_to="' +
                                data.time_to +
                                '"  data-bs-toggle="modal" data-bs-target="#modal_add" class="edit btn btn-sm btn-secondary"><i class="fa fa-pencil-alt"></i></button>'
                            );
                        } else if (data.status == 4) {
                            return (
                                '<button type="button"  data-id=' +
                                data.id +
                                '" data-patient="' +
                                data.patient +
                                '" data-patient_id="' +
                                data.user_id +
                                '" data-schedule_date="' +
                                data.schedule_date +
                                '"  data-bs-toggle="modal" data-bs-target="#modal_download" id="download-prescription" class="btn btn-sm btn-secondary"><i class="fa fa-download"></i></button>'
                            );
                        }
                    } else if (user == "doctor") {
                        if (data.status == 0) {
                            return (
                                '<button type="button"  data-id=' +
                                data.id +
                                '" data-patient="' +
                                data.patient +
                                '" data-patient_id="' +
                                data.user_id +
                                '" data-schedule_date="' +
                                data.schedule_date +
                                '"  data-bs-toggle="modal" data-bs-target="#modal_approve" id="approve" class="btn btn-sm btn-secondary"><i class="fa fa-thumbs-up"></i></button>'
                            );
                        } else if (data.status == 1) {
                            return (
                                '<button type="button" data-id="' +
                                data.id +
                                '" data-patient="' +
                                data.patient +
                                '" data-service="' +
                                data.service_id +
                                '" data-patient_id="' +
                                data.user_id +
                                '" data-bs-toggle="modal" data-bs-target="#change-status-to-done-appointment-modal" id="prescription" class="btn btn-sm btn-secondary"><i class="fa fa-prescription"></i></button>'
                            );
                        } else if (data.status == 3) {
                            return (
                                '<button type="button" data-id="' +
                                data.id +
                                '" data-patient="' +
                                data.patient +
                                '" data-service="' +
                                data.service_id +
                                '" data-patient_id="' +
                                data.user_id +
                                '" data-bs-toggle="modal" data-bs-target="#modal_prescription" id="prescription" class="btn btn-sm btn-secondary"><i class="fa fa-prescription"></i></button>'
                            );
                        } else if (data.status == 4) {
                            return (
                                '<button type="button" data-id="' +
                                data.id +
                                '" data-patient="' +
                                data.patient +
                                '" data-service="' +
                                data.service_id +
                                '" data-patient_id="' +
                                data.user_id +
                                '" data-bs-toggle="modal" data-bs-target="#change-status-to-done-transaction-modal" id="prescription" class="btn btn-sm btn-secondary"><i class="fa fa-prescription"></i></button>'
                            );
                        } else {
                            return "<span>No available</span>";
                        }
                    } else if (user == "admin") {
                        if (data.status == 0) {
                            return (
                                '<button type="button"  data-id=' +
                                data.id +
                                '" data-patient="' +
                                data.patient +
                                '" data-patient_id="' +
                                data.user_id +
                                '" data-schedule_date="' +
                                data.schedule_date +
                                '"  data-bs-toggle="modal" data-bs-target="#modal_approve" id="approve" class="btn btn-sm btn-secondary"><i class="fa fa-thumbs-up"></i></button>'
                            );
                        } else if (data.status == 1) {
                            return (
                                '<button type="button" data-id="' +
                                data.id +
                                '" data-patient="' +
                                data.patient +
                                '" data-service="' +
                                data.service_id +
                                '" data-patient_id="' +
                                data.user_id +
                                '" data-bs-toggle="modal" data-bs-target="#change-status-to-done-appointment-modal" id="prescription" class="btn btn-sm btn-secondary"><i class="fa fa-prescription"></i></button>'
                            );
                        } else if (data.status == 3) {
                            return (
                                '<button type="button" data-id="' +
                                data.id +
                                '" data-patient="' +
                                data.patient +
                                '" data-service="' +
                                data.service_id +
                                '" data-patient_id="' +
                                data.user_id +
                                '" data-bs-toggle="modal" data-bs-target="#modal_prescription" id="prescription" class="btn btn-sm btn-secondary"><i class="fa fa-prescription"></i></button>'
                            );
                        } else if (data.status == 4) {
                            return (
                                '<button type="button" data-id="' +
                                data.id +
                                '" data-patient="' +
                                data.patient +
                                '" data-service="' +
                                data.service_id +
                                '" data-patient_id="' +
                                data.user_id +
                                '" data-bs-toggle="modal" data-bs-target="#change-status-to-done-transaction-modal" id="prescription" class="btn btn-sm btn-secondary"><i class="fa fa-prescription"></i></button>'
                            );
                        } else {
                            return "<span>No available</span>";
                        }
                    } else {
                        return "<span>No available</span>";
                    }

                    // if(user == 'patient' && data.status == 0){
                    //     return '<button type="button"  data-id=' + data.id + ' data-doctor="' + data.doctor
                    //     + '" data-service="' + data.service_id
                    //     + '" data-schedule_date="' + data.schedule_date
                    //     + '" data-time_from="' + data.time_from
                    //     + '" data-time_to="' + data.time_to
                    //     + '"  data-bs-toggle="modal" data-bs-target="#modal_add" class="edit btn btn-sm btn-secondary"><i class="fa fa-pencil-alt"></i></button>';
                    // }else if(user == 'patient' && (data.status == 1)){
                    //     return '<button type="button"  data-id=' + data.id
                    //     + '" data-patient="' + data.patient
                    //     + '" data-patient_id="' + data.user_id
                    //     + '" data-schedule_date="' + data.schedule_date
                    //     + '"  data-bs-toggle="modal" data-bs-target="#modal_download" id="download-prescription" class="btn btn-sm btn-secondary"><i class="fa fa-download"></i></button>';
                    // }else if (user == 'doctor' && data.status == 0){
                    //     return '<button type="button"  data-id=' + data.id
                    //     + '" data-patient="' + data.patient
                    //     + '" data-patient_id="' + data.user_id
                    //     + '" data-schedule_date="' + data.schedule_date
                    //     + '"  data-bs-toggle="modal" data-bs-target="#modal_approve" id="approve" class="btn btn-sm btn-secondary"><i class="fa fa-thumbs-up"></i></button>';
                    // }else if (user == 'doctor' && data.status == 1) {
                    //     return '<button type="button" data-id="' + data.id +
                    //     '" data-patient="' + data.patient +
                    //     '" data-service="' + data.service_id +
                    //     '" data-patient_id="' + data.user_id +
                    //     '" data-bs-toggle="modal" data-bs-target="#modal_prescription" id="prescription" class="btn btn-sm btn-secondary"><i class="fa fa-prescription"></i></button>';
                    // } else if (user == 'doctor' && (data.status == 1 || data.status == 2)){
                    //     return '<span>No available</span>';
                    // }else if (user == 'admin' && data.status == 0){
                    //     return '<button type="button"  data-id=' + data.id
                    //     + '" data-patient="' + data.patient
                    //     + '" data-schedule_date="' + data.schedule_date
                    //     + '" data-patient_id="' + data.user_id
                    //     + '"  data-bs-toggle="modal" data-bs-target="#modal_approve" id="approve" class="btn btn-sm btn-secondary"><i class="fa fa-thumbs-up"></i></button>'
                    //     +'<button type="button"  data-id=' + data.id + ' data-doctor="' + data.doctor
                    //     + '" data-service="' + data.service_id
                    //     + '" data-schedule_date="' + data.schedule_date
                    //     + '" data-time_from="' + data.time_from
                    //     + '" data-time_to="' + data.time_to
                    //     + '"  data-bs-toggle="modal" data-bs-target="#modal_add" class="edit btn btn-sm btn-secondary"><i class="fa fa-pencil-alt"></i></button>';
                    // }else if (user == 'admin' && (data.status == 1 || data.status == 2)){
                    //     return '<span>No available</span>';
                    // }
                },
            },
        ],
        drawCallback: function (settings, json) {
            $(".tooltips").tooltip();
        },
    });

    $("#new").on("click", function (e) {
        $("#data_id").val(0);
        $("#service").val("");
        $("#doctor").val("");
        $("#schedule_date").val("");
    });

    $("#save_btn").on("click", function (e) {
        e.preventDefault();

        var btn = $(this);
        var form = $(this).closest("form");

        form.validate({
            rules: {
                service_name: {
                    required: true,
                },
                price: {
                    required: true,
                },
            },
        });

        if (!form.valid()) {
            return;
        }

        btn.attr("disabled", true);
        var data = new FormData(form[0]);

        //$('#msg').css('display', 'block');
        let url =
            $("#data_id").val() == 0
                ? "/createAppointment"
                : "/updateAppointment";

        $.ajax({
            type: "POST",
            url: url,
            data: data,
            processData: false,
            contentType: false,
            beforeSend: function () {
                $("#msg").empty();
            },

            // success: function(result) {
            //     if (result === 'warning_past_date') {
            //         Swal.fire({
            //             position: "top-end",
            //             icon: 'warning',
            //             title: 'You cannot book an appointment in the past. Please choose a future date.',
            //             showConfirmButton: false,
            //             timer: 3000
            //         });
            //         window.location.reload();
            //     } else if (result === 'warning') {
            //         Swal.fire({

            //             icon: 'warning',
            //             title: 'Someone has already booked an appointment at the same time. Please choose a different time.',
            //             showConfirmButton: false,
            //             timer: 3000
            //         });
            //         window.location.reload();
            //     } else if (result === 'warning') {
            //         Swal.fire({

            //             icon: 'warning',
            //             title: 'Doctor appointment limit reached. Please wait for availability or try another time slot.',
            //             showConfirmButton: true,
            //             timer: 3000
            //         });
            //         window.location.reload();
            //     } else if (result === 'success') {
            //         Swal.fire({

            //             icon: 'success',
            //             title: 'Your appointment has been received and is under review. Please wait for confirmation.',
            //             showConfirmButton: true,
            //             timer: 3000
            //         });
            //         window.location.reload();
            //     } else if (result === 'update') {
            //         Swal.fire({

            //             icon: 'success',
            //             title: 'Appointment updated successfully!',
            //             showConfirmButton: true,
            //             timer: 3000
            //         });
            //         window.location.reload();
            //     } else {
            //         Swal.fire({

            //             icon: 'error',
            //             title: 'Error: ' + result,
            //             showConfirmButton: true,
            //             timer: 3000
            //         });
            //     }
            //     btn.attr('disabled', false);
            // }

            success: function (result) {
                let swalConfig = {}; // Configure SweetAlert2 options

                if (result === "warning_past_date") {
                    swalConfig = {
                        icon: "warning",
                        title: "You cannot book an appointment in the past. Please choose a future date.",
                    };
                } else if (result === "warning") {
                    swalConfig = {
                        icon: "warning",
                        title: "Someone has already booked an appointment at the same time. Please choose a different time.",
                    };
                } else if (result === "warning_limit") {
                    swalConfig = {
                        icon: "warning",
                        title: "Doctor appointment limit reached. Please wait for availability or try another time slot.",
                    };
                } else if (result === "success") {
                    swalConfig = {
                        icon: "success",
                        title: "Your appointment has been received and is under review. Please wait for confirmation.",
                    };
                } else if (result === "update") {
                    swalConfig = {
                        icon: "success",
                        title: "Appointment updated successfully!",
                    };
                } else {
                    swalConfig = {
                        icon: "error",
                        title: "Error: " + result,
                    };
                }

                // Display SweetAlert2 with configured options
                Swal.fire(swalConfig).then(() => {
                    // This block will be executed after the user clicks the "OK" button
                    btn.attr("disabled", false);
                    window.location.reload();
                });
            },
        });
    });

    // // Edit - with universal route
    // $('table tbody').on('click', '.edit', function() {
    //     console.log($(this).data())
    //     $('#data_id').val($(this).data('id'));
    //     $('#service').val($(this).data('service'));
    //     $('#doctor').val($(this).data('doctor'));
    //     $('#schedule_date').val($(this).data('schedule_date'));
    //     $('#time_from').val($(this).data('time_from'));
    //     $('#time_to').val($(this).data('time_to'));
    // });

    // $('table tbody').on('click', '#approve', function() {
    //     $('#data_id').val($(this).data('id'));
    //     $('#patient_id').val($(this).data('patient_id'));
    //     $('#client_info').html('patient '+$(this).data('patient')+' on '+$(this).data('schedule_date'))
    // });

    // $('#approve_btn').click(function(){
    //     $.ajax({
    //         type: 'GET',
    //         url: '/approveAppointment/'+$('#data_id').val()+'/approved/'+$('#patient_id').val(),
    //         processData: false,
    //         contentType: false,
    //         beforeSend: function(){
    //             $('#msg').empty();
    //         },
    //         success: function(result) {
    //             //toastr.clear();
    //             if(result != 'success'){
    //                 alert(result)
    //             }else{
    //                 alert('save')
    //                 window.location.reload();
    //             }
    //             btn.attr('disabled', false);
    //         }
    //     });
    // })
    // Edit - with universal route
    $("table tbody").on("click", ".edit", function () {
        console.log($(this).data());
        $("#data_id").val($(this).data("id"));
        $("#service").val($(this).data("service"));
        $("#doctor").val($(this).data("doctor"));
        $("#schedule_date").val($(this).data("schedule_date"));
        $("#time_from").val($(this).data("time_from"));
        $("#time_to").val($(this).data("time_to"));
    });

    $("table tbody").on("click", "#approve", function () {
        $("#data_id").val($(this).data("id"));
        $("#patient_id").val($(this).data("patient_id"));
        $("#client_info").html(
            "patient " +
                $(this).data("patient") +
                " on " +
                $(this).data("schedule_date")
        );
    });

    $("#approve_btn").click(function () {
        var btn = $(this);

        $.ajax({
            type: "GET",
            url:
                "/approveAppointment/" +
                $("#data_id").val() +
                "/approved/" +
                $("#patient_id").val(),
            processData: false,
            contentType: false,
            beforeSend: function () {
                $("#msg").empty();
            },
            success: function (result) {
                let swalConfig = {}; // Configure SweetAlert2 options

                if (result === "success") {
                    swalConfig = {
                        icon: "success",
                        title: "Appointment approved successfully!",
                    };
                } else {
                    swalConfig = {
                        icon: "error",
                        title: "Error: " + result,
                    };
                }

                // Display SweetAlert2 with configured options
                Swal.fire(swalConfig).then(() => {
                    // This block will be executed after the user clicks the "OK" button
                    btn.attr("disabled", false);
                    window.location.reload();
                });
            },
        });
    });

    $("#cancel_btn").click(function () {
        $.ajax({
            type: "GET",
            url:
                "/approveAppointment/" +
                $("#data_id").val() +
                "/disapproved/" +
                $("#patient_id").val(),
            processData: false,
            contentType: false,
            beforeSend: function () {
                $("#msg").empty();
            },
            success: function (result) {
                //toastr.clear();
                if (result != "success") {
                    alert(result);
                } else {
                    alert("save");
                    window.location.reload();
                }
                btn.attr("disabled", false);
            },
        });
    });

    //Save Prescription
    $("table tbody").on("click", "#prescription", function () {
        $("#data_id").val($(this).data("id"));
        $("#patient_id").val($(this).data("patient_id"));
        $("#client_info").html(
            "patient " +
                $(this).data("patient") +
                " on " +
                $(this).data("schedule_date")
        );
        $("#service").val($(this).data("service"));
    });

    $("#prescribe_btn").on("click", function () {
        var prescriptionData = {
            id: $("#patient_id").val(),
            result: $("#result").val(),
            service: $("#service").val(),
            appointmentId: $("#data_id").val(),
        };

        $.ajax({
            type: "POST",
            url: "prescription",
            data: prescriptionData,
            beforeSend: function () {
                $("#msg").empty();
            },
            success: function (result) {
                if (result != "success") {
                    alert(result);
                } else {
                    alert("save");
                    window.location.reload();
                }
                btn.attr("disabled", false);
            },
        });
    });

    //Download Prescription
    $("table tbody").on("click", "#download-prescription", function () {
        $("#download_data_id").val($(this).data("id"));
        $("#download_patient_id").val($(this).data("patient_id"));

        $("#download-form").attr("action", `/generate-prescription`);
    });

    $("#confirm_download_btn").on("click", function () {
        // var prescriptionData = {
        //     id: $('#data_id').val(),
        //     patientId: $('#patient_id').val(),
        // };
        // $.ajax({
        //     type: 'GET',
        //     url: 'generate-prescription',
        //     data: prescriptionData,
        //     beforeSend: function() {
        //         $('#msg').empty();
        //     },
        //     success: function(result) {
        //         // Convert the result content to a Blob
        //         var blob = new Blob([result], { type: 'application/pdf' });
        //         // Create a download link
        //         var downloadLink = document.createElement('a');
        //         downloadLink.href = URL.createObjectURL(blob);
        //         downloadLink.download = 'prescription.pdf';
        //         // Append the link to the body
        //         document.body.appendChild(downloadLink);
        //         // Trigger a click on the link to start the download
        //         downloadLink.click();
        //         // Remove the link from the body
        //         document.body.removeChild(downloadLink);
        //         // btn.attr('disabled', false);
        //     }
        // });
    });
});