Can’t access my site, getting ‘There has been a critical error on this website. Please check your site admin email inbox for instructions.’ message

Access to the files on the server either by ftp or cpanel, navigate to the plugins folder and rename each plugin folder by adding a number at the end of the folder name this will fix the error.
If you already know the plugin causing the problem delete it.

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