Unable to access WPadmin, website down

go to the WordPress directory wp-content/plugin/ and rename the folder “force-strong-passwords” to force-strong-passwords-d

If it worked then it is a plugin error
remove this plugin and install its alternative plugin

If you still need this plugin than contact to the plugin author

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