Documentation Index
Fetch the complete documentation index at: https://ngrok.com/docs/llms.txt
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ERR_NGROK_3004
ngrok gateway error The server returned an invalid or incomplete HTTP response.Additional Information
This error usually occurs when users are hosting a secure upstream service (https://localhost:[PORT]) but have not configured the ngrok agent to send HTTPS traffic to it.
Possible Solutions
- When starting the ngrok agent, use the full upstream service address. For example:
ngrok http https://localhost:8081.