Working state

views/admin/posts/form.twig

@@ -130,20 +130,7 @@
                     serverPath: '/admin/media/upload',
                     fileFieldName: 'file',
                     urlPropertyName: 'url',
-                    statusPropertyName: 'success',
-                    headers: {
-                        'X-Requested-With': 'XMLHttpRequest'
-                    },
-                    data: [
-                        {
-                            name: '{{ csrf.keys.name }}',
-                            value: '{{ csrf.name }}'
-                        },
-                        {
-                            name: '{{ csrf.keys.value }}',
-                            value: '{{ csrf.value }}'
-                        }
-                    ]
+                    statusPropertyName: 'success'
                 }
             }
         });