Update app.py

app.py

@@ -173,11 +173,11 @@ def remove_file(n_clicks, existing_files):
         raise PreventUpdate
     
     triggered_id = ctx.triggered[0]['prop_id']
-    removed_file = json.loads(triggered_id.split('.')[0])['index']
+    removed_file = triggered_id.split('"index":')[1].split('}')[0].strip('"')
     
     uploaded_files.pop(removed_file, None)
     return [file for file in existing_files if file['props']['children'][1]['children'] != removed_file]
-
+    
 def generate_matrix_with_gpt(matrix_type, file_contents):
     prompt = f"""Generate a {matrix_type} based on the following project artifacts:
 {' '.join(file_contents)}