expecting value: line 1 column 1 (char 0）

When running app.py locally, gradio displays expecting value: line 1 column 1 (char 0). I tried to turn off the proxy by following other people's methods, but a connection error was displayed. How can I solve this problem?

<img width="1276" alt="Image" src="https://github.com/user-attachments/assets/ea2ee2f7-8cac-46cb-88ee-8ddf524399b1" />