Beklager, teknisk feil! 8192 - 3 - /var/log/httpd-pubsys-debug.log - 2025-04-29 05:26:48	18.116.239.148	www.matematikk.org	/trinn11-13/binfil/download.php?tid=66188	/usr/local/www/pubsys-prod/matematikk.prod/core/htdocs/binfil/download.php:9	8192:Deprecated	mb_strlen(): Passing null to parameter #1 ($string) of type string is deprecated