Fatal error: Uncaught Error: Call to undefined function add_action() in /home/athpfkmy/public_html/resinpro.pl/wp-content/plugins/ultimate-addons-for-gutenberg/lib/ast-block-templates/classes/class-ast-block-templates-sync-library.php:46 Stack trace: #0 /home/athpfkmy/public_html/resinpro.pl/wp-content/plugins/ultimate-addons-for-gutenberg/lib/ast-block-templates/classes/class-ast-block-templates-sync-library.php(35): Ast_Block_Templates_Sync_Library->__construct() #1 /home/athpfkmy/public_html/resinpro.pl/wp-content/plugins/ultimate-addons-for-gutenberg/lib/ast-block-templates/classes/class-ast-block-templates-sync-library.php(576): Ast_Block_Templates_Sync_Library::get_instance() #2 {main} thrown in /home/athpfkmy/public_html/resinpro.pl/wp-content/plugins/ultimate-addons-for-gutenberg/lib/ast-block-templates/classes/class-ast-block-templates-sync-library.php on line 46