Hi @JoseCandido,
Once OJS version : 3.2.1.1 - Crossref deposit /Export XML problem **Unrecognized DAO PublishedArticleDAO!** · Issue #6071 · pkp/pkp-lib · GitHub is marked as resolved (this should be within the next week or two), you’ll be able to install an updated version of the CrossRef reference linking plugin. This will resolve the problem. In the meantime, I’d recommend removing or disabling this plugin in your installation.
Regards,
Alec Smecher
Public Knowledge Project Team