Fatal error: Uncaught Error: Call to undefined function add_action() in /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/modules/wpcom-block-editor/class-jetpack-wpcom-block-editor.php:49 Stack trace: #0 /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/modules/wpcom-block-editor/class-jetpack-wpcom-block-editor.php(38): Jetpack_WPCOM_Block_Editor->__construct() #1 /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/modules/wpcom-block-editor/class-jetpack-wpcom-block-editor.php(621): Jetpack_WPCOM_Block_Editor::init() #2 {main} thrown in /home/antenaserwis/public_html/satserwis/wp-content/plugins/jetpack/modules/wpcom-block-editor/class-jetpack-wpcom-block-editor.php on line 49