Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/antenaserwis/public_html/satserwis/wp-content/plugins/ithemes-security-pro/core/modules/wordpress-tweaks/class-itsec-wordpress-tweaks.php:44 Stack trace: #0 /home/antenaserwis/public_html/satserwis/wp-content/plugins/ithemes-security-pro/core/modules/wordpress-tweaks/class-itsec-wordpress-tweaks.php(62): ITSEC_WordPress_Tweaks->add_config_hooks() #1 /home/antenaserwis/public_html/satserwis/wp-content/plugins/ithemes-security-pro/core/modules/wordpress-tweaks/class-itsec-wordpress-tweaks.php(12): ITSEC_WordPress_Tweaks->init() #2 /home/antenaserwis/public_html/satserwis/wp-content/plugins/ithemes-security-pro/core/modules/wordpress-tweaks/class-itsec-wordpress-tweaks.php(17): ITSEC_WordPress_Tweaks->__construct() #3 /home/antenaserwis/public_html/satserwis/wp-content/plugins/ithemes-security-pro/core/modules/wordpress-tweaks/class-itsec-wordpress-tweaks.php(629): ITSEC_WordPress_Tweaks::get_instance() #4 {main} thrown in /home/antenaserwis/public_html/satserwis/wp-content/plugins/ithemes-security-pro/core/modules/wordpress-tweaks/class-itsec-wordpress-tweaks.php on line 44