Fatal error: Uncaught Error: Interface 'League\CommonMark\Extension\ExtensionInterface' not found in /home/vtsnised/public_html/anketa2.0/vendor/league/commonmark/src/Extension/Mention/MentionExtension.php:19 Stack trace: #0 {main} thrown in /home/vtsnised/public_html/anketa2.0/vendor/league/commonmark/src/Extension/Mention/MentionExtension.php on line 19