What is the fine-grained topic of the following text: I resubmitted the site map to Search Console, and it basically rejected it, returning a bunch of "Duplicate, submitted URL not selected as canonical" errors for all the pages (Search Console seemed to be getting confused by pages with trailing slashes, treating them as 'user-declared canonicals' and duplicates). Only return the topic.
Resubmitting site map issues in Search Console due to canonical errors.