gRPC
13 INTERNAL
An internal error occurred. This means that some invariant expected by the underlying system has been broken.
When You See This Code
A server-side bug, a corrupted internal state, or an unexpected failure in a dependency. This is the gRPC equivalent of HTTP 500.
How to Fix
Check the server error logs and traces for the root cause. This typically indicates a bug that needs to be fixed in the server code.