Fatal error:  Uncaught TypeError: array_merge(): Argument #2 must be of type array, null given in /var/www/clients/client2/web3/web/stagenet/core/pagetypes/02_repertoire/funktion.php:63
Stack trace:
#0 /var/www/clients/client2/web3/web/stagenet/core/pagetypes/02_repertoire/funktion.php(63): array_merge()
#1 /var/www/clients/client2/web3/web/stagenet/core/lib/frontend_functions.php(3872): include('...')
#2 [internal function]: {closure}()
#3 /var/www/clients/client2/web3/web/stagenet/core/lib/frontend_functions.php(3854): preg_replace_callback()
#4 /var/www/clients/client2/web3/web/stagenet/core/seitenaufbau.php(445): call_widgets()
#5 /var/www/clients/client2/web3/web/stagenet/core/index.php(18): require_once('...')
#6 {main}
  thrown in /var/www/clients/client2/web3/web/stagenet/core/pagetypes/02_repertoire/funktion.php on line 63