ERR_NGROK_119: The agent specified an invalid semantic version string: VERSION

What does ERR_NGROK_119 mean?

ngrok returns ERR_NGROK_119 with this message:

The agent specified an invalid semantic version string: <VERSION>

Troubleshoot ERR_NGROK_119 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.