ERR_NGROK_1923: The provided certificate and private key do not match each other

What does ERR_NGROK_1923 mean?

ngrok returns ERR_NGROK_1923 with this message:

The provided certificate and private key do not match each other.

Troubleshoot ERR_NGROK_1923 with your AI agent. Connect it to the ngrok MCP server, then ask what caused the error and how to fix it.

Email support@ngrok.com and include the error code.