Hi @Juan Caicay
Based on your error message, this doesn't seem to be an error with SSRS, but a VSS related error. I found this link for you: volume-shadow-copy-service-error-unexpected-error-querying-for-the-ivsswritercallback-interface-how-to-fix-that, if you need a more detailed answer, please ask in the correct forum section.
By the way, this is an English forum, and I recommend that you use English when you ask questions so that others can reply.
Best regards,
Aniya