A lot of things.

resources/js/SubmissionsClass/GalleryManager.js

@@ -72,8 +72,9 @@ export function GalleryManager() {
                     break;
 
                 const IMG = GalleryImage();
-                IMG.getOldImage( PATH );
+                IMG.serverFilePath = PATH;
                 this.images.push(IMG);
+                this.images[this.images.length - 1].getOldImage( PATH );
             }
         },
 

resources/js/SubmissionsClass/MainImageManager.js

@@ -2,6 +2,12 @@ export function MainImageManager() {
 
     return {
 
+        /**
+         * Used for gallery managament and indexation.
+         * @type {string}
+         */
+        key: crypto.randomUUID(),
+
         /**
          * If an image has been uploaded or not.
          * @type {boolean}