Fatal error: Uncaught Error: Call to undefined function get_theme_file_uri() in /home/kajetan/public_html/nastawnia/wp-content/themes/modern/includes/frontend/class-assets.php:656 Stack trace: #0 /home/kajetan/public_html/nastawnia/wp-includes/plugin.php(213): Modern_Assets::editor_stylesheets(Array) #1 /home/kajetan/public_html/nastawnia/wp-content/themes/modern/includes/setup/class-setup.php(173): apply_filters('wmhook_modern_s...', Array) #2 /home/kajetan/public_html/nastawnia/wp-includes/plugin.php(496): Modern_Setup::setup('') #3 /home/kajetan/public_html/nastawnia/wp-settings.php(337): do_action('after_setup_the...') #4 /home/kajetan/public_html/nastawnia/wp-config.php(85): require_once('/home/kajetan/p...') #5 /home/kajetan/public_html/nastawnia/wp-load.php(29): require_once('/home/kajetan/p...') #6 /home/kajetan/public_html/nastawnia/wp-blog-header.php(12): require_once('/home/kajetan/p...') #7 /home/kajetan/public_html/nastawnia/index.php(17): require('/home/kajetan/p...') #8 {main} thrown in /home/kajetan/public_html/nastawnia/wp-content/themes/modern/includes/frontend/class-assets.php on line 656