Errors being created by admin-ajax.php

Try deactivating plugins one by one and you’ll findout which plugin is conflicting with your ajax call. Then we can debug error easily .

But I am sure this is because of plugin conflict You just need to check which one is it.

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