OCR ERROR Exit-Code 6

Can someone help me? I have been using it all along and it worked very well and suddenly it does not anymore! In the documentation I can’t find anything related to error code 6. Do I need to upgrade from free to paid or what is the issue? I can’t find anything in my code, that I have changed…
Thank you so much!!

It seems to be a problem with the ocr-engine, because it works with engine 1. Is engine 2 not free anymore or just offline?