Issue with campaign import from google ads.

Hello all, I am having issue with campaign import via API. When i trigger my function to create job i receive such response:
(reply){

ImportJobIds =

  (ArrayOflong){

     long[] = 

        12345,

  }

PartialErrors = ""

}

but when i request job result i receive status = Failed and no further description or log, also on user interface I see created job, but failed with a message :"Internal error thrown from the application." and summary System error – can’t import right now.