Fatal error: Uncaught Error: Call to undefined function wp_is_block_theme() in /homepages/32/d751650164/htdocs/clickandbuilds/WordPress/MyCMS2/wp-content/plugins/ultimate-addons-for-gutenberg/classes/class-uagb-front-assets.php:137 Stack trace: #0 /homepages/32/d751650164/htdocs/clickandbuilds/WordPress/MyCMS2/wp-includes/class-wp-hook.php(292): UAGB_Front_Assets->enqueue_asset_files('') #1 /homepages/32/d751650164/htdocs/clickandbuilds/WordPress/MyCMS2/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters(NULL, Array) #2 /homepages/32/d751650164/htdocs/clickandbuilds/WordPress/MyCMS2/wp-includes/plugin.php(484): WP_Hook->do_action(Array) #3 /homepages/32/d751650164/htdocs/clickandbuilds/WordPress/MyCMS2/wp-includes/script-loader.php(2027): do_action('wp_enqueue_scri...') #4 /homepages/32/d751650164/htdocs/clickandbuilds/WordPress/MyCMS2/wp-includes/class-wp-hook.php(292): wp_enqueue_scripts('') #5 /homepages/32/d751650164/htdocs/clickandbuilds/WordPress/MyCMS2/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filte in /homepages/32/d751650164/htdocs/clickandbuilds/WordPress/MyCMS2/wp-content/plugins/ultimate-addons-for-gutenberg/classes/class-uagb-front-assets.php on line 137