Fatal error: Uncaught Error: Class "ProseMirrorToHtml\Marks\Mark" not found in /home/gingerbrup/gardien/vendor/ueberdosis/prosemirror-to-html/tests/Marks/Custom/CustomMark.php:7 Stack trace: #0 {main} thrown in /home/gingerbrup/gardien/vendor/ueberdosis/prosemirror-to-html/tests/Marks/Custom/CustomMark.php on line 7