Fatal error: Uncaught Error: Interface "League\CommonMark\Block\Parser\BlockParserInterface" not found in /home/deborapsol/laravel/vendor/league/commonmark/src/Extension/TableOfContents/TableOfContentsPlaceholderParser.php:21 Stack trace: #0 {main} thrown in /home/deborapsol/laravel/vendor/league/commonmark/src/Extension/TableOfContents/TableOfContentsPlaceholderParser.php on line 21