Fatal error: Uncaught Error: Interface "League\CommonMark\ConfigurableEnvironmentInterface" not found in C:\Apache24_x64\htdocs\ex-vak\vendor\league\commonmark\src\Environment.php:31 Stack trace: #0 {main} thrown in C:\Apache24_x64\htdocs\ex-vak\vendor\league\commonmark\src\Environment.php on line 31