lama-cleaner notebook error

HTTPError                                 Traceback (most recent call last)
/usr/local/lib/python3.9/dist-packages/pyngrok/ngrok.py in api_request(url, method, data, params, timeout)
    455     try:
--> 456         response = urlopen(request, data, timeout)
    457         response_data = response.read().decode("utf-8")

---8 frames---

HTTPError: HTTP Error 502: Bad Gateway

During handling of the above exception, another exception occurred:

PyngrokNgrokHTTPError                     Traceback (most recent call last)
/usr/local/lib/python3.9/dist-packages/pyngrok/ngrok.py in api_request(url, method, data, params, timeout)
    475         logger.debug("Response {}: {}".format(status_code, response_data.strip()))
    476
--> 477         raise PyngrokNgrokHTTPError("ngrok client exception, API returned {}: {}".format(status_code, response_data),
    478                                     e.url,
    479                                     status_code, e.msg, e.hdrs, response_data)

PyngrokNgrokHTTPError: ngrok client exception, API returned 502: {"error_code":103,"status_code":502,"msg":"failed to start tunnel","details":{"err":"EOF"}}