"Present Validation Station: Validation Station can't be presented: no taxonomy available"

I am trying to do some document classification. I just want to read pdf and classify whether it is a passport or not.

I have a taxonomy json and a keyword classifier json. I have used the taxonomy wizard and the keyword classifyer wizard.

But when running the module “classify document” i am still getting the same error again and again : " Present Validation Station: Validation Station can’t be presented: no taxonomy available"

I did not even use a module “present validation station”. The error message does not make sense at all! The error log is really not helpful at all.

This error is nowhere to find online by the way.

Any suggestion or observation would be more than welcome! Thank you in advance

neverminds, i had to use load taxonomy