Backup problems with pdf

Hello, for several days I have been having problems with backup copies, and Duplicati hangs when it is going to make copies of the PDFs, something like this has never happened to me, I have deleted the copies, the databases and I have I reconfigured everything from 0, but the problem persists, I have also set the Snapshot option to off, on and auto, and it doesn’t work either. Any ideas on this? Thank you very much in advance.

This was filed a bit before Duplicati blocked in PDF, but was held in moderation, so I think the originator created a new account. @Fran got PM requesting a self-delete, but apparently never did. Shall I now?