cause is deliberately not attached: errorBandMiddleware remaps any INTERNAL_SERVER_ERROR whose cause is a CircleError, which would put the generic message straight back.
cause
errorBandMiddleware
INTERNAL_SERVER_ERROR
CircleError
causeis deliberately not attached:errorBandMiddlewareremaps anyINTERNAL_SERVER_ERRORwhosecauseis aCircleError, which would put the generic message straight back.