ERR_NGROK_SHIP_REPLICA_LOGS_REPLICA_GONE: The replica's current RESOURCE no longer exists - ngrok documentation

What does ERR_NGROK_SHIP_REPLICA_LOGS_REPLICA_GONE mean?

ngrok returns ERR_NGROK_SHIP_REPLICA_LOGS_REPLICA_GONE with this message:

The replica's current <RESOURCE> no longer exists.

Where can I get more help with ERR_NGROK_SHIP_REPLICA_LOGS_REPLICA_GONE?

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