Can anyone see a syntax error in this? [closed]

Your setGlobalOption() call here is different from the rest:

self::$settings->setGlobalOption('dashboard_seo' = false);
self::$settings->setGlobalOption('stats_seo', false);

I think your = should be , instead.

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