Fatal error: Uncaught Error: Class 'Masterminds\HTML5\Parser\StringInputStream' not found in C:\SistemasPHP\observatorio4\vendor\masterminds\html5\src\HTML5\Parser\FileInputStream.php:17 Stack trace: #0 {main} thrown in C:\SistemasPHP\observatorio4\vendor\masterminds\html5\src\HTML5\Parser\FileInputStream.php on line 17