Warning: Trying to access array offset on value of type null in /mnt/web111/d2/02/58098402/htdocs/logopaedie-legden/mail_code.php on line 183 Fatal error: Uncaught TypeError: filtereKyrillischeZeichen(): Argument #1 ($eingabe) must be of type string, null given, called in /mnt/web111/d2/02/58098402/htdocs/logopaedie-legden/mail_code.php on line 183 and defined in /mnt/web111/d2/02/58098402/htdocs/logopaedie-legden/mail_code.php:174 Stack trace: #0 /mnt/web111/d2/02/58098402/htdocs/logopaedie-legden/mail_code.php(183): filtereKyrillischeZeichen() #1 /mnt/web111/d2/02/58098402/htdocs/logopaedie-legden/index.php(23): include('...') #2 {main} thrown in /mnt/web111/d2/02/58098402/htdocs/logopaedie-legden/mail_code.php on line 174