Cannot create unknown type '{}GoogleOCR'

Hi all,

I’ve published a process to orchestrator (2020.10.5) which contains a “clickOCRText”-Activity (use of Tesseract OCR).
I use UiPath.UIAutomation.Activities v20.12.0-preview.

When I start the process in orchestrator I will geht the error message:
…Cannot create unknown type ‘{}GoogleOCR’…

Can anybody tell me what file is missing on robot machine?

Thanks a lot.