Fatal error: require(): Failed opening required '/home/alibiuro/domains/loboslink.pl/public_html/wp-includes/compat.php' (include_path='.:/opt/alt/php74/usr/share/pear') in /home/alibiuro/domains/loboslink.pl/public_html/wp-settings.php on line 107

Fatal error: Uncaught Error: Call to undefined function trailingslashit() in /home/alibiuro/domains/loboslink.pl/public_html/wp-includes/class-wp-textdomain-registry.php:103
Stack trace:
#0 /home/alibiuro/domains/loboslink.pl/public_html/wp-includes/l10n.php(784): WP_Textdomain_Registry->set('default', 'pl_PL', '/home/alibiuro/...')
#1 /home/alibiuro/domains/loboslink.pl/public_html/wp-includes/load.php(1401): load_textdomain('default', '/home/alibiuro/...', 'pl_PL')
#2 /home/alibiuro/domains/loboslink.pl/public_html/wp-includes/class-wp-fatal-error-handler.php(174): wp_load_translations_early()
#3 /home/alibiuro/domains/loboslink.pl/public_html/wp-includes/class-wp-fatal-error-handler.php(154): WP_Fatal_Error_Handler->display_default_error_template(Array, false)
#4 /home/alibiuro/domains/loboslink.pl/public_html/wp-includes/class-wp-fatal-error-handler.php(58): WP_Fatal_Error_Handler->display_error_template(Array, false)
#5 [internal function]: WP_Fatal_Error_Handler->handle()
#6 {main}
  thrown in /home/alibiuro/domains/loboslink.pl/public_html/wp-includes/class-wp-textdomain-registry.php on line 103