Using same term for slug and category

OK, found it. it is possible to have the same slug for a page and a category name. The problem was that someone installed a “redirection” plugin that caused the problems.

Lesson learned is to restrict the capabilities of people working on the website, so that they cannot install plugins..

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)