Fatal error: Uncaught Error: Call to undefined function wp_is_block_theme() in /www/htdocs/w01a351d/happybusinesswoman.com/wp-content/plugins/ultimate-addons-for-gutenberg/classes/class-uagb-front-assets.php:136 Stack trace: #0 /www/htdocs/w01a351d/happybusinesswoman.com/wp-includes/class-wp-hook.php(287): UAGB_Front_Assets->enqueue_asset_files('') #1 /www/htdocs/w01a351d/happybusinesswoman.com/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #2 /www/htdocs/w01a351d/happybusinesswoman.com/wp-includes/plugin.php(484): WP_Hook->do_action(Array) #3 /www/htdocs/w01a351d/happybusinesswoman.com/wp-includes/script-loader.php(2004): do_action('wp_enqueue_scri...') #4 /www/htdocs/w01a351d/happybusinesswoman.com/wp-includes/class-wp-hook.php(287): wp_enqueue_scripts('') #5 /www/htdocs/w01a351d/happybusinesswoman.com/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #6 /www/htdocs/w01a351d/happybusinesswoman.com/wp-includes/plugin.php(484): WP_Hook->do_action(Array) #7 /www/htdocs/w01a351 in /www/htdocs/w01a351d/happybusinesswoman.com/wp-content/plugins/ultimate-addons-for-gutenberg/classes/class-uagb-front-assets.php on line 136