Update app.py

app.py

@@ -18,7 +18,7 @@ new_data = {
 }
 
 # The 'with' statement ensures that the file is properly closed after its suite finishes
-with open('data/test_output.json', 'w') as f:  
+with open('/data/test_output.json', 'w') as f:  
     # Use json.dump() to write the dictionary to the file
     json.dump(new_data, f, indent=4)  # `indent=4` is for pretty-printing the JSON file