Fatal error: Uncaught Error: Call to undefined function esc_html() in /opt/app-root/src/wp-content/plugins/favicon-by-realfavicongenerator/admin/views/appearance.php:7 Stack trace: #0 {main} thrown in /opt/app-root/src/wp-content/plugins/favicon-by-realfavicongenerator/admin/views/appearance.php on line 7