Update app.py

app.py

@@ -17,6 +17,7 @@ st.write(dbname)
 st.write('Loading Graph to ArangoDB')
 movie_rec_db = load_data_to_ArangoDB(login)
 st.write('Making PyG graph from ArangoDB')
+global data
 data,train_data, val_data, test_data = make_pyg_graph(movie_rec_db)
 st.write('training graph')
 model = load_model(train_data, val_data, test_data)