What does ?cat=2-5-results mean at the end of URLs?

It’s used (together with the search query) to measure number of results for a search query, it’s not supposed to show up in Analytics like this, this could only happen due to people scraping your site and clicking through to the actual URL…

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