403 error only for some WP posts, why?

Question

WordPress

Good afternoon. Not all, but only some entries, after installing the Cyr to Lat plugin (translating links into Latin), began to give a 403 error (Access denied). It is worth renaming the link, it immediately opens normally, I return the old link - again 403, as if a ban was registered on this link, can anyone come across such a problem?
Ps There are no redirect plugins, htaccess is clean (deleted and created a new one).

Answer 1

The problem was commonplace, there were sections with such names in the root of the site and therefore there was a 403 server error

Answer 2

Try refreshing Permalinks -- switch back and forth