Fatal error: Uncaught TypeError: PhpOffice\PhpSpreadsheet\RichText\RichText::createTextRun(): Argument #1 ($text) must be of type string, null given, called in /homepages/25/d349456728/htdocs/SG-Essen/webs/sg-datacenter/prod/wordpress/WebBest/WkErgebnisse/ResultOverviewXls.inc.php on line 460 and defined in /homepages/25/d349456728/htdocs/SG-Essen/webs/sg-datacenter/prod/wordpress/WebBest/classes/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/RichText/RichText.php:73 Stack trace: #0 /homepages/25/d349456728/htdocs/SG-Essen/webs/sg-datacenter/prod/wordpress/WebBest/WkErgebnisse/ResultOverviewXls.inc.php(460): PhpOffice\PhpSpreadsheet\RichText\RichText->createTextRun() #1 /homepages/25/d349456728/htdocs/SG-Essen/webs/sg-datacenter/prod/wordpress/WebBest/WkErgebnisse/ResultOverviewXls.inc.php(440): writeKopf() #2 /homepages/25/d349456728/htdocs/SG-Essen/webs/sg-datacenter/prod/wordpress/WebBest/WkErgebnisse/ResultOverviewXls.inc.php(17): MeldungXls() #3 /homepages/25/d349456728/htdocs/SG-Essen/webs/sg-datacenter/prod/wordpress/WebBest/WebBest.php(44): require_once('/homepages/25/d...') #4 {main} thrown in /homepages/25/d349456728/htdocs/SG-Essen/webs/sg-datacenter/prod/wordpress/WebBest/classes/vendor/phpoffice/phpspreadsheet/src/PhpSpreadsheet/RichText/RichText.php on line 73