Fatal error: Uncaught Error: Call to undefined function add_action() in /home/alfawzan/public_html/wp-content/plugins/astra-sites/inc/lib/gutenberg-templates/classes/class-ast-block-templates-sync-library.php:55 Stack trace: #0 /home/alfawzan/public_html/wp-content/plugins/astra-sites/inc/lib/gutenberg-templates/classes/class-ast-block-templates-sync-library.php(44): Ast_Block_Templates_Sync_Library->__construct() #1 /home/alfawzan/public_html/wp-content/plugins/astra-sites/inc/lib/gutenberg-templates/classes/class-ast-block-templates-sync-library.php(773): Ast_Block_Templates_Sync_Library::get_instance() #2 {main} thrown in /home/alfawzan/public_html/wp-content/plugins/astra-sites/inc/lib/gutenberg-templates/classes/class-ast-block-templates-sync-library.php on line 55