Fatal error: Uncaught Error: Call to undefined function add_action() in /home/antenaserwis/public_html/satserwis/wp-content/plugins/ithemes-security-pro/core/show-multiple-version-notice.php:7 Stack trace: #0 {main} thrown in /home/antenaserwis/public_html/satserwis/wp-content/plugins/ithemes-security-pro/core/show-multiple-version-notice.php on line 7