Fatal error: Uncaught Error: Call to undefined function add_action() in /home/antenaserwis/public_html/satserwis/wp-content/plugins/ithemes-security-pro/core/modules/multisite-tweaks/class-itsec-multisite-tweaks.php:10 Stack trace: #0 /home/antenaserwis/public_html/satserwis/wp-content/plugins/ithemes-security-pro/core/modules/multisite-tweaks/active.php(5): ITSEC_Multisite_Tweaks->run() #1 {main} thrown in /home/antenaserwis/public_html/satserwis/wp-content/plugins/ithemes-security-pro/core/modules/multisite-tweaks/class-itsec-multisite-tweaks.php on line 10