AJAX Call is not Sent NO ERRORS

I am using AJAX for making a custom plugin in WordPress. I have successful made some pages. But whatever I do, AJAX doesn’t even make a call in a particular page. I have checked the console, no request is made and syntax is valid.

My code:

function onSubmit(token) { 
     document.getElementById("result").innerHTML += "<p style="color: green;">Processing.........</p>";
     var form = document.forms["dt_login_form"];
var formData = new FormData(form);
     
                    $.ajax({
url: "/login/",
                       method: 'POST',
                       data: formData,
                       async: false,
                       cache: false,
                       contentType: false,
                       enctype: 'multipart/form-data',
                       processData: false,
                       success: function (data) {
                           if(data.status == 'success'){
                            document.getElementById("result").innerHTML = "<p style="color: green;">Successfully Logged In! Redirecting.....</p>";
                          } else if(data.status == 'fail'){
                            $('form').addClass('ahashakeheartache');
                            $('form').on('webkitAnimationEnd oanimationend msAnimationEnd animationend', function(e){
                              $('form').delay(200).removeClass('ahashakeheartache');
                            });
                            document.getElementById("result").innerHTML = "<p style='color: red; float:center; text-align: center; font-size: 20px; '>Request Failed with Error:<br>" + data.message + "</p><br>";
                          }
                      },
                      error: function (err) {
                        console.log(err);
                          document.getElementById("result").innerHTML = "<p style='color: red;'>Request Failed with some Fatal Errors. Contact System Administrator or check Console for more details. </p><br><br>";
                      }
                    });
                   
   }

I have tried removing other parameters, still it isn’t working. Whereas in other page, almost same code, it works.