ERR_NGROK_2252: Invalid format for set-vars: vars must be a list of maps of exactly size 1 - ngrok documentation

What does ERR_NGROK_2252 mean?

ngrok returns ERR_NGROK_2252 with this message:

Invalid format for set-vars: vars must be a list of maps of exactly size 1

Troubleshoot ERR_NGROK_2252 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_2252?

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