phpMyFAQ Fatal error

Uncaught exception: 'TypeError'

Message: 'phpMyFAQ\Strings::htmlentities(): Argument #1 ($string) must be of type string, null given, called in /var/www/kb.gosi.at/public_html/news.php on line 133'

Stack trace:

#0 /var/www/kb.gosi.at/public_html/news.php(133): phpMyFAQ\Strings::htmlentities()
#1 /var/www/kb.gosi.at/public_html/index.php(797): require('...')
#2 {main}

Thrown in '/var/www/kb.gosi.at/public_html/src/phpMyFAQ/Strings.php' on line 274