Dropzone.js How to resend the form after the form field Error on the server side

Question

I am using Zend Framework 2 and have implemented Dropzone.js. I am still very new to Dropzone and am now facing the following problem. I submit my file along with the rest of the form fields. With PHP, I check if the form is valid if I do not return error messages and attach it via jQuery to the form. Everything works fine, but, unfortunately, after I filled out all the form fields, I can no longer click the submit button. How can i achieve this? It just sounds like a normal process, but I have to do something very wrong. Can someone give me a hint?

  Dropzone.options.myDropzone = {
      autoProcessQueue: false,
      uploadMultiple: true,
      parallelUploads: 100,
      maxFiles: 1,
      maxFilesize: 10, //mb
      acceptedFiles: 'image/*',
      addRemoveLinks: true,
      autoDiscover: false,
      previewsContainer: '.dropzone-previews', //used for specifying the previews div
      clickable: '.dz-clickable', //used this but now i cannot click on previews div to showup the file select dialog box

      accept: function(file, done) {
                console.log("uploaded");
                done();
            },

      // The setting up of the dropzone
      init: function() {
            var myDropzone = this;


            $('#myDropzone').on("submit", function(e) {
              if(myDropzone.files.length > 0) {
                 e.preventDefault();
                 e.stopPropagation();
                 myDropzone.processQueue();
              }
            });         

            myDropzone.processQueue(); // this will submit your form to the specified action path

            // after this, your whole form will get submitted with all the inputs + your files and the php code will remain as usual 
            // REMEMBER you DON'T have to call ajax or anything by yourself, dropzone will take care of that
            // First change the button to actually tell Dropzone to process the queue.


            this.on("maxfilesexceeded", function(file){
                    alert("You have exceeded the maximum files allowed !");
                    this.removeFile(file);
                });      

            // Listen to the sendingmultiple event. In this case, it the sendingmultiple event instead
            // of the sending event because uploadMultiple is set to true.
            this.on("sendingmultiple", function() {
              // Gets triggered when the form is actually being sent.
              // Hide the success button or the complete form.
            });

            this.on("successmultiple", function(files, response) {

               if (response.status == true)
               {
                  window.location.replace(response.redirect);
               }else{   
                  $.each(response.error, function(key, value){
                    $('[name="'+key+'"]').parent().append(getErrorHtml(response[key], value));
                 });
               }
            });

            this.on("errormultiple", function(files, response) {
              // Gets triggered when there was an error sending the files.
              // Maybe show form again, and notify user of error
            });
      },

    };

 function getErrorHtml(key , value)
 {
   var html = '<ul id="errors-'+key+'" class="errors">';
       html += '<li>' + value + '</li>';
       html += '</ul>';
   return html;

}