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What does ERR_NGROK_3422 mean?

ngrok returns ERR_NGROK_3422 with this message:
Troubleshoot ERR_NGROK_3422 with your AI agent. Connect it to the ngrok MCP server, then ask what caused the error and how to fix it.

Where can I get more help with ERR_NGROK_3422?

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