Fatal error: Uncaught Error: Interface "League\CommonMark\ConverterInterface" not found in C:\xampp\htdocs\adminlte3\vendor\league\commonmark\src\Xml\MarkdownToXmlConverter.php:23 Stack trace: #0 {main} thrown in C:\xampp\htdocs\adminlte3\vendor\league\commonmark\src\Xml\MarkdownToXmlConverter.php on line 23