Chyba po aktualizacii

Ked mam aktivovany plugin Yoast SEO tak sa mi neda dostat na nasledovne stranky:
http://www.vares.sk/wp-admin/edit.php?post_type=page
http://www.vares.sk/wp-admin/edit.php?post_type=product
Na obrazovke sa zobrazi:
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator, webmaster@xr015500.hh and inform them of the time the error occurred, and anything you might have done that may have caused the error.
More information about this error may be available in the server error log.

Ked Yoast SEO plugin deakivujem tak to funguje. Skusal som uz odinstalovat Yoast, aj vymazat adresar /wp-content/plugins/wordpress-seo/ ale nepomohlo.
Prosim o radu kde by mohol byt problem.
Dakujem.

Stránka, s ktorou potrebujem pomôcť: [prihláste sa pre zobrazenie odkazu]