Update AB/index.html

AB/index.html

@@ -286,7 +286,7 @@ h1 {
 
           const formData = new FormData();
             const fileInput = document.querySelector('input[type="file"]');
-            formData.append('file', fileInput.files[0]);
+            formData.append('image_file', fileInput.files[0]);
                
       try {
         // Display loading spinner