Update app.py

app.py

@@ -181,7 +181,7 @@ function uploadImage(image, event, source, value) {
             source: source,
             value:image: imageUrl
         };
-        window.parent.postMessage(JSON.stringify(data), '*');
+        window.parent.postMessage(data, '*');
     } else if (isValidEnv()){
         try{
             sendCustomEventToDataLayer({},event,source,{"image":imageUrl})