Warning: Undefined variable $files in /mnt/web212/e2/57/53153457/htdocs/timithekid.de/index.php on line 105

Fatal error: Uncaught TypeError: generateSitemap(): Argument #1 ($files) must be of type array, null given, called in /mnt/web212/e2/57/53153457/htdocs/timithekid.de/index.php on line 105 and defined in /mnt/web212/e2/57/53153457/htdocs/timithekid.de/index.php:62
Stack trace:
#0 /mnt/web212/e2/57/53153457/htdocs/timithekid.de/index.php(105): generateSitemap()
#1 {main}
  thrown in /mnt/web212/e2/57/53153457/htdocs/timithekid.de/index.php on line 62