Fatal error: Uncaught Error: Call to undefined function Automattic\Jetpack\Extensions\Premium_Content\add_action() in /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/extensions/blocks/premium-content/_inc/subscription-service/include.php:33 Stack trace: #0 /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/extensions/blocks/premium-content/_inc/access-check.php(12): require_once() #1 /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/extensions/blocks/premium-content/subscriber-view/subscriber-view.php(15): require_once('/home/antenaser...') #2 {main} thrown in /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/extensions/blocks/premium-content/_inc/subscription-service/include.php on line 33