Fatal error: Uncaught Error: Class 'League\CommonMark\Inline\Element\AbstractStringContainer' not found in C:\xampp73\htdocs\web\vendor\league\commonmark\src\Inline\Element\HtmlInline.php:17 Stack trace: #0 {main} thrown in C:\xampp73\htdocs\web\vendor\league\commonmark\src\Inline\Element\HtmlInline.php on line 17