Export to XLS issue

[gallowayLm]

Hello,

I have followed the instructions of the documentation regarding the upgrade from version 3 to version 4.

1. I have added to config/livewire-powergrid.php the 'exportable' => ['default' => 'openspout_v4']
2. I have completed the installation of openspout package
3. Finally I am using the Trait WithExport in my Powergrid Table as shown below in the setup method

When I am tying the action to export I receive the following error:
ERROR: Class "" not found {"userId":1,"exception":"[object] (Error(code: 0): Class "" not found at /app/vendor/power-components/livewire-powergrid/src/Traits/WithExport.php:229)

I have also tried composer install and composer dump-autoload after the openspout/openspout installation. Is anyone facing similar issues?

Thanks in advance

[gallowayLm]

Actually I had not complete the export array in the config/livewire-powergrid.php
I was missing blue highlighted

Everything works smoothly.

[KonstantinosVazaios]

I have been trying so hard finding a solution... Thank you!