Fatal error: Uncaught Error: Class 'Twig_SimpleFunction' not found in /usr/www/users/sitepeyvaq/wp-content/plugins/slider-by-supsystic/src/SupsysticSlider/Core/Module.php:107 Stack trace: #0 /usr/www/users/sitepeyvaq/wp-content/plugins/slider-by-supsystic/src/SupsysticSlider/Core/Module.php(26): SupsysticSlider_Core_Module->registerTwigFunctions() #1 /usr/www/users/sitepeyvaq/wp-content/plugins/gallery-by-supsystic/vendor/Rsc/Resolver.php(103): SupsysticSlider_Core_Module->onInit() #2 /usr/www/users/sitepeyvaq/wp-content/plugins/gallery-by-supsystic/vendor/Rsc/Environment.php(243): Rsc_Resolver->init() #3 /usr/www/users/sitepeyvaq/wp-includes/class-wp-hook.php(287): Rsc_Environment->extend('') #4 /usr/www/users/sitepeyvaq/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array) #5 /usr/www/users/sitepeyvaq/wp-includes/plugin.php(478): WP_Hook->do_action(Array) #6 /usr/www/users/sitepeyvaq/wp-settings.php(409): do_action('plugins_loaded') #7 /usr/www/users/sitepeyvaq/wp-config.php(164): require_once('/usr/ww in /usr/www/users/sitepeyvaq/wp-content/plugins/slider-by-supsystic/src/SupsysticSlider/Core/Module.php on line 107