Fatal error: Uncaught Error: Class "HTMLPurifier_HTMLModule_Tidy_XHTMLAndHTML4" not found in /home/alterna/private_assets.alternalab.it/vendor/ezyang/htmlpurifier/library/HTMLPurifier/HTMLModule/Tidy/Transitional.php:3 Stack trace: #0 {main} thrown in /home/alterna/private_assets.alternalab.it/vendor/ezyang/htmlpurifier/library/HTMLPurifier/HTMLModule/Tidy/Transitional.php on line 3