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