Fatal error: Uncaught Error: Class "League\CommonMark\Block\Element\AbstractStringContainerBlock" not found in C:\Apache24_x64\htdocs\ex-vak-new\vendor\league\commonmark\src\Block\Element\HtmlBlock.php:21 Stack trace: #0 {main} thrown in C:\Apache24_x64\htdocs\ex-vak-new\vendor\league\commonmark\src\Block\Element\HtmlBlock.php on line 21