Fatal error: Uncaught Error: Class "Masterminds\HTML5\Parser\StringInputStream" not found in C:\Apache24\htdocs\cms_upgrade\vendor\masterminds\html5\src\HTML5\Parser\FileInputStream.php:17 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cms_upgrade\vendor\masterminds\html5\src\HTML5\Parser\FileInputStream.php on line 17