ERR_NGROK_314: Only paid plans may create endpoints with custom hostnames - ngrok documentation

What does ERR_NGROK_314 mean?

ngrok returns ERR_NGROK_314 with this message:

Only paid plans may create endpoints with custom hostnames.
Failed to create an endpoint with the custom hostname <HOSTNAME> for the account <ACCOUNT>.
This account is on the <PLAN> plan.

Upgrade to a paid plan at: https://dashboard.ngrok.com/billing/choose-a-plan

How do I fix ERR_NGROK_314?

Upgrade your account to a Pro or Pay-as-you-go plan from your account dashboard to reserve a custom hostname.

If you don’t need a fully custom hostname, you can reserve a custom ngrok domain (like example.ngrok.app) on a paid plan.

Where can I get more help with ERR_NGROK_314?

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