Not allowing to upload same image on same the position after delete that image

Ajax call which is uploading image file in assests folder

module.exports =  {
  // Default assets
  assets: [],

  // Style prefix
  stylePrefix: 'am-',

  // Url where uploads will be send, set false to disable upload
  upload: 'http://localhost/grapeJs/src/file_uploader/fileUpload.php',

  // Text on upload input
  uploadText: 'Drop files here or click to upload',

  // Label for the add button
  addBtnText: 'Add image',

  // Custom uploadFile function
 // @example
  uploadFile: function(e) {
    var files = e.dataTransfer ? e.dataTransfer.files : e.target.files;
    // ...send somewhere
      console.log(files);

      var formData = new FormData();

      for(var i in files){
          formData.append('file-'+i, files[i])
      }

      $.ajax({url: 'http://localhost/grapeJs/src/file_uploader/fileUpload.php',
          type: 'POST',
          data: formData,
          contentType:false,
          crossDomain: true,
          mimeType: "multipart/form-data",
          processData:false,
          success: function(result){
            var images = result.data; // <- should be an array of uploaded images
            editor. AssetManager.add(images);
          }
});

  }

 //  uploadFile: '',
};

It's working fine to add an image from the local.

But in another scenario, It's not working. Please have a look Drag image block Select an image Delete that image Add the same image again on same the place, "uploadFile" function is not calling It's not allowing me to upload same image on same position after delete that image