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ERR_NGROK_3004
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ERR_NGROK_3004
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Message
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
.
Further help
If you’re having trouble resolving this error, please reach out to
support@ngrok.com
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