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Fatal error: Uncaught Error: Call to undefined function scalable() in /wp-content/themes/starter-1/extend/wp_shorts.php:53 Stack trace: #0 /wp-includes/class-wp-hook.php(287): my_head('') #1 /wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #2 /wp-includes/plugin.php(478): WP_Hook->do_action(Array) #3 /wp-includes/general-template.php(2884): do_action('wp_head') #4 /wp-content/themes/starter-1/header.php(11): wp_head() #5 /wp-includes/template.php(723): require_once('/wp-content/the...') #6 /wp-includes/template.php(672): load_template('//wp-content/th...', true) #7 /wp-includes/general-template.php(41): locate_template(Array, true) #8 /wp-content/themes/starter-1/front-page.php(1): get_header() #9 /wp-includes/template-loader.php(106): include('/wp-content/the...') #10 /wp-blog-header.php(19): require_once('/wp-includes/te...') #11 /index.php(17): require('/wp-blog-header...') #12 {main} thrown in /wp-content/themes/starter-1/extend/wp_shorts.php on line 53