Fatal error: Uncaught Error: Call to undefined function add_filter() in /home/antenaserwis/public_html/satserwis/wp-content/plugins/ithemes-security-pro/core/modules/system-tweaks/class-itsec-system-tweaks.php:40
Stack trace:
#0 /home/antenaserwis/public_html/satserwis/wp-content/plugins/ithemes-security-pro/core/modules/system-tweaks/class-itsec-system-tweaks.php(10): ITSEC_System_Tweaks->add_hooks()
#1 /home/antenaserwis/public_html/satserwis/wp-content/plugins/ithemes-security-pro/core/modules/system-tweaks/class-itsec-system-tweaks.php(15): ITSEC_System_Tweaks->__construct()
#2 /home/antenaserwis/public_html/satserwis/wp-content/plugins/ithemes-security-pro/core/modules/system-tweaks/class-itsec-system-tweaks.php(117): ITSEC_System_Tweaks::get_instance()
#3 {main}
thrown in /home/antenaserwis/public_html/satserwis/wp-content/plugins/ithemes-security-pro/core/modules/system-tweaks/class-itsec-system-tweaks.php on line 40