hi I get this message on the website

A critical error has occurred on the site.

Tags: Fatal error: Uncaught Error: Call to a member function get_list_item_separator() on null in /customers/7/4/9/lindsbageri.se/httpd.www/wp-includes/l10n.php:1786 Stack trace: #0 /customers/7/4/9/lindsbageri.se/httpd.www/wp-includes/class-wp-theme.php(936): wp_get_list_item_separator() #1 /customers/7/4/9/lindsbageri.se/httpd.www/wp-includes/class-wp-theme.php(836): WP_Theme->markup_header('Tags', Array, false) #2 /customers/7/4/9/lindsbageri.se/httpd.www/wp-content/plugins/bakery-options/options.php(67): WP_Theme->display('Tags') #3 /customers/7/4/9/lindsbageri.se/httpd.www/wp-content/plugins/bakery-options/options.php(34): Redux_Framework_Bakery_Options->setSections() #4 /customers/7/4/9/lindsbageri.se/httpd.www/wp-includes/class-wp-hook.php(307): Redux_Framework_Bakery_Options->initSettings('') #5 /customers/7/4/9/lindsbageri.se/httpd.www/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(NULL, Array) #6 /customers/7/4/9/lindsbageri.se/httpd.www/wp-includes/plugin.php(476): WP_Hook->do_action(Array) #7 /customers/7/4/9/lindsbageri.se/httpd.www/wp-settings.php(461): do_action('plugins_loaded') #8 /customers/7/4/9/lindsbageri.se/httpd.www/wp-config.php(131): require_once('/customers/7/4/...') #9 /customers/7/4/9/lindsbageri.se/httpd.www/wp-load.php(50): require_once('/customers/7/4/...') #10 /customers/7/4/9/lindsbageri.se/httpd.www/wp-blog-header.php(13): require_once('/customers/7/4/...') #11 /customers/7/4/9/lindsbageri.se/httpd.www/index.php(17): require('/customers/7/4/...') #12 {main} thrown in /customers/7/4/9/lindsbageri.se/httpd.www/wp-includes/l10n.php on line 1786