PHP AJAX – Uncaught PDOException: SQLSTATE[HY093], what is this?

I looked around stackoverflow, there are lots of this kind of question. But I can’t seem to find what is missing in the code.

Fatal error: Uncaught PDOException: SQLSTATE[HY093]: Invalid parameter number: number of bound variables does not match number of tokens in C:xampphtdocsbackendcasestraffictraffic-insert.php:95 Stack trace: #0 C:xampphtdocsbackendcasestraffictraffic-insert.php(95): PDOStatement->execute(Array) #1 C:xampphtdocsrouter.php(51): include_once('C:\xampp\htdocs...') #2 C:xampphtdocsrouter.php(9): route('/traffic-insert', '/backend/cases/...') #3 C:xampphtdocsroutes.php(24): post('/traffic-insert', '/backend/cases/...') #4 {main} thrown in C:xampphtdocsbackendcasestraffictraffic-insert.php on line 95

This error came after solving this:
PHP AJAX – data update/edit inserts as new data instead of updating

Here is the code:

<?php

include('./backend/config/connection.php');
include('./backend/config/function.php');

   if( isset($_POST["traffic_operation"]) ) {
       if( isset($_POST["traffic_operation"]) == "Add" ) {
              $traffic_doc = '';
       
              if( $_FILES["traffic_doc"]["name"] != '') {
                     $traffic_doc = upload_image();
              }
              $statement = $connection->prepare('INSERT INTO traffic_violations (
                     plateNumber,
                     carModel,
                     carColor,
                     violationType,
                     ownerGender,
                     violationDateTime,
                     violationLocation,
                     workingShift,
                     violationAction,
                     violationStatement,
                     cccEmployee
              ) VALUES (
                     :plate_number,
                     :car_model,
                     :car_color,
                     :violation_type,
                     :owner_gender,
                     :violation_date,
                     :violation_location,
                     :working_shift,
                     :violation_action,
                     :traffic_doc,
                     :ccc_employee
                     )
              ');
              $result = $statement->execute(
                     array(
                            ':plate_number' => $_POST["plate_number"],
                            ':car_model' => $_POST["car_model"],
                            ':car_color' => $_POST["car_color"],
                            ':violation_type' => $_POST["violation_type"],
                            ':owner_gender' => $_POST['owner_gender'],
                            ':violation_date' => $_POST['violation_date'],
                            ':violation_location' => $_POST['violation_location'],
                            ':working_shift' => $_POST['working_shift'],
                            ':violation_action' => $_POST['violation_action'],
                            ':traffic_doc' => $traffic_doc,
                            ':ccc_employee' => $_POST['ccc_employee']
                     )
              );
                     if( !empty($result) ) {
                            echo '<script>alert("Traffic Violation Added")</script>';
                     }
       }

       if( $_POST["traffic_operation"] == "Edit" ) {
              $traffic_doc = '';

              if( $_FILES["traffic_doc"]["name"] != '') {
                     $traffic_doc = upload_image();
              } else {
                     $traffic_doc = $_POST['hidden_user_image'];
              }

              $statement = $connection->prepare('UPDATE traffic_violations SET
                     plateNumber = :plate_number,
                     carModel = car_model,
                     carColor = car_color,
                     violationType = violation_type,
                     ownerGender = owner_gender,
                     violationDateTime = violation_date,
                     violationLocation = violation_location,
                     workingShift = working_shift,
                     violationAction = violation_action,
                     violationStatement = traffic_doc,
                     cccEmployee = ccc_employee,
                     WHERE id = :id'
                     );
                     $statement->execute(
                            array(
                                   'id' => $_POST["violation_id"],
                                   ':plate_number' => $_POST["plate_number"],
                                   ':car_model' => $_POST["car_model"],
                                   ':car_color' => $_POST["car_color"],
                                   ':violation_type' => $_POST["violation_type"],
                                   ':owner_gender' => $_POST['owner_gender'],
                                   ':violation_date' => $_POST['violation_date'],
                                   ':violation_location' => $_POST['violation_location'],
                                   ':working_shift' => $_POST['working_shift'],
                                   ':violation_action' => $_POST['violation_action'],
                                   ':traffic_doc' => $traffic_doc,
                                   ':ccc_employee' => $_POST['ccc_employee']
                            )
                     );
                     echo 'Traffic Violation Updated';
       }
   }
?>