Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, non-static method ABLAUF::iff() cannot be called statically in /var/www/standardincludes/sce/4.1/sce_aliase.php(55) : eval()'d code:1 Stack trace: #0 /var/www/standardincludes/projekte/hfv/formulare/qualidmm.php(47): iff() #1 /var/www/standardincludes/projekte/hfv/hfv_klasse_formular.php(685): formular_qualidmm->erzeugen() #2 /var/www/vhosts/hfev.org/httpdocs/web/qualidmm.html(3): FORMULAR->inline() #3 {main} thrown in /var/www/standardincludes/sce/4.1/sce_aliase.php(55) : eval()'d code on line 1