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