Update app.py

app.py

@@ -116,7 +116,7 @@ def main():
                               dataset_upload)
         
         # Dataset button
-        dataset_predefined_load.click(fn=get_predefined_dataset
+        dataset_predefined_load.click(fn=get_predefined_dataset,
                                   inputs=dataset_predefined_load,
                                   outputs=data_snippet)