Fatal error: Uncaught Error: Call to undefined function language_attributes() in /var/www/esc.fs.cvut.cz/_HOSTING_WEB2_/wp-includes/theme-compat/header-embed.php:19 Stack trace: #0 {main} thrown in /var/www/esc.fs.cvut.cz/_HOSTING_WEB2_/wp-includes/theme-compat/header-embed.php on line 19