Fatal error: Uncaught TypeError: League\CommonMark\MarkdownConverter::convert(): Argument #1 ($input) must be of type string, null given, called in /home/omsi.hu/public_html/item.php on line 172 and defined in /home/omsi.hu/public_html/assets/addon/CommonMark/vendor/league/commonmark/src/MarkdownConverter.php:56 Stack trace: #0 /home/omsi.hu/public_html/item.php(172): League\CommonMark\MarkdownConverter->convert() #1 {main} thrown in /home/omsi.hu/public_html/assets/addon/CommonMark/vendor/league/commonmark/src/MarkdownConverter.php on line 56