ERR_NGROK_1921: The uploaded certificate PEM data exceeds the maximum length limit of MAX_SIZE bytes - ngrok documentation

What does ERR_NGROK_1921 mean?

ngrok returns ERR_NGROK_1921 with this message:

The uploaded certificate PEM data exceeds the maximum length limit of <MAX_SIZE> bytes.

Troubleshoot ERR_NGROK_1921 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_1921?

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