Fatal error: Uncaught Error: Call to undefined function add_action() in /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/modules/simple-payments/simple-payments.php:125 Stack trace: #0 /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/modules/simple-payments/simple-payments.php(83): Jetpack_Simple_Payments->register_init_hooks() #1 /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/modules/simple-payments/simple-payments.php(804): Jetpack_Simple_Payments::get_instance() #2 {main} thrown in /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/modules/simple-payments/simple-payments.php on line 125