Frequent system exception from Digitize Document activity - connection closed

We have a particular process which is top-down and uses persistence along with Document Understanding. We are seeing this error frequently and it appears to be happening from the Digitize Document activity. We are using the UiPath.DocumentUnderstanding.OCR.LocalServer 1.5.1.

Here is the error:

One or more errors occurred. (Request CorrelationId: 5e36bf93-de0b-4aaf-a0eb-689665d08066 Request PredictionId: xWzc31/hgr236cu0hAL2rjvxJBE4XxqSW7PijoUriRY=_4dc8efa4-5705-458c-9380-1d5846f1e14a Connection closed.)

Hi @postwick

please check the OCR Engine you are using, try changing to other Engines also if this does not solve the issue, check the API key.