> ## Documentation Index
> Fetch the complete documentation index at: https://ngrok.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Error 9029

## ERR\_NGROK\_9029

Failed to start endpoint with `URL`. Endpoints with a "internal" binding must have a url that ends in ".internal".

## Further help

If you're having trouble resolving this error, please reach out to [support@ngrok.com](mailto:support@ngrok.com?subject=Help%20with%20ERR_NGROK_9029)