Fatal error: Uncaught TypeError: Unsupported operand types: string + int in /homepages/27/d25517596/htdocs/setKundenID.php:8 Stack trace: #0 /homepages/27/d25517596/htdocs/Homepage.php(2): require() #1 {main} thrown in /homepages/27/d25517596/htdocs/setKundenID.php on line 8