Hello, I did everything as in the instructions, it doesn't work in Laravel 8.

ErrorException
Undefined index: hiddengrid

Is there a possibility in Laravel 8 because the instructions for Laravel 5.5 don't work.

Maybe someone can show the necessary steps here.

Would like to buy it but before that at least the demo should work

System Laravel 8.83.23

PHP 7.4.20
Mysql 10.4.19-MariaDB

Thanks Gert