Fatal error: Uncaught Error: Interface "League\CommonMark\Environment\EnvironmentAwareInterface" not found in C:\svn\carga\vendor\league\commonmark\src\Extension\HeadingPermalink\HeadingPermalinkProcessor.php:30 Stack trace: #0 {main} thrown in C:\svn\carga\vendor\league\commonmark\src\Extension\HeadingPermalink\HeadingPermalinkProcessor.php on line 30