Fatal error: Uncaught Error: Call to undefined function is_user_logged_in() in /var/www/vhosts/patmoshippo.gr/httpdocs/wp-content/plugins/divi-interface-language-filter/divi-interface-language-filter.php:13 Stack trace: #0 /var/www/vhosts/patmoshippo.gr/httpdocs/wp-includes/class-wp-hook.php(324): use_user_locale_for_admin_builder('el') #1 /var/www/vhosts/patmoshippo.gr/httpdocs/wp-includes/plugin.php(205): WP_Hook->apply_filters('el', Array) #2 /var/www/vhosts/patmoshippo.gr/httpdocs/wp-includes/l10n.php(35): apply_filters('locale', 'el') #3 /var/www/vhosts/patmoshippo.gr/httpdocs/wp-includes/l10n.php(166): get_locale() #4 /var/www/vhosts/patmoshippo.gr/httpdocs/wp-content/plugins/woocommerce/vendor/automattic/jetpack-assets/src/class-assets.php(461): determine_locale() #5 /var/www/vhosts/patmoshippo.gr/httpdocs/wp-includes/class-wp-hook.php(324): Automattic\Jetpack\Assets::wp_default_scripts_hook(Object(WP_Scripts)) #6 /var/www/vhosts/patmoshippo.gr/httpdocs/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #7 /var/www/vhosts/patmoshippo.gr/httpdocs/wp-includes/plugin.php(565): WP_Hook->do_action(Array) #8 /var/www/vhosts/patmoshippo.gr/httpdocs/wp-includes/class-wp-scripts.php(166): do_action_ref_array('wp_default_scri...', Array) #9 /var/www/vhosts/patmoshippo.gr/httpdocs/wp-includes/class-wp-scripts.php(149): WP_Scripts->init() #10 /var/www/vhosts/patmoshippo.gr/httpdocs/wp-includes/functions.wp-scripts.php(24): WP_Scripts->__construct() #11 /var/www/vhosts/patmoshippo.gr/httpdocs/wp-includes/functions.wp-scripts.php(419): wp_scripts() #12 /var/www/vhosts/patmoshippo.gr/httpdocs/wp-content/plugins/woocommerce/includes/class-wc-frontend-scripts.php(72): wp_script_is('flexslider') #13 /var/www/vhosts/patmoshippo.gr/httpdocs/wp-includes/class-wp-hook.php(324): WC_Frontend_Scripts::add_legacy_script_warnings('') #14 /var/www/vhosts/patmoshippo.gr/httpdocs/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters(NULL, Array) #15 /var/www/vhosts/patmoshippo.gr/httpdocs/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #16 /var/www/vhosts/patmoshippo.gr/httpdocs/wp-includes/load.php(1304): do_action('shutdown') #17 [internal function]: shutdown_action_hook() #18 {main} thrown in /var/www/vhosts/patmoshippo.gr/httpdocs/wp-content/plugins/divi-interface-language-filter/divi-interface-language-filter.php on line 13