Fatal error: Uncaught Error: Interface "League\Config\ConfigurationProviderInterface" not found in C:\www\Apache24\htdocs\agenda-dif\vendor\league\commonmark\src\Environment\EnvironmentBuilderInterface.php:28 Stack trace: #0 {main} thrown in C:\www\Apache24\htdocs\agenda-dif\vendor\league\commonmark\src\Environment\EnvironmentBuilderInterface.php on line 28