Laravel Nova Action Fields - laravel

Question

EDIT:
in novas ActionEvent.php class i edited the two rows fields and exceptions for the forResourceUpdate function:
Whats actually strange now my resource is updated but there is nothing in the ACTION EVENT table.
public static function forResourceUpdate($user, $model)
{
return new static([
'batch_id' => (string) Str::orderedUuid(),
'user_id' => $user->getKey(),
'name' => 'Update',
'actionable_type' => $model->getMorphClass(),
'actionable_id' => $model->getKey(),
'target_type' => get_class($model),
'target_id' => $model->getKey(),
'model_type' => get_class($model),
'model_id' => $model->getKey(),
'fields' => 'test',
'status' => 'finished',
'exception' => 'test',
]);
}
so i just installed Nova set up some Resources, it shows everything fine, but when i try to update any of them, i get a Database error that i cant insert NULL into ACTION_EVENT.FIELDS.
https://nova.laravel.com/docs/1.0/actions/defining-actions.html#action-fields
The Doc says i can define some fields in the Actions fields function , but i didnt generate any Action class not i want to. I think its some sort of default action logging?
Can i turn it off, or do i have to add some Fields somewhere?
<?php
namespace App\Nova;
use Laravel\Nova\Fields\ID;
use Illuminate\Http\Request;
use Laravel\Nova\Http\Requests\NovaRequest;
class Chain extends Resource
{
public static $category = "Stammdaten";
/**
* The model the resource corresponds to.
*
* #var string
*/
public static $model = 'App\Model\System\Partner\Chain';
/**
* The single value that should be used to represent the resource when being displayed.
*
* #var string
*/
public static $title = 'id';
/**
* The columns that should be searched.
*
* #var array
*/
public static $search = [
'id',
];
/**
* Get the fields displayed by the resource.
*
* #param \Illuminate\Http\Request $request
* #return array
*/
public function fields(Request $request)
{
return [
ID::make()->sortable(),
];
}
/**
* Get the cards available for the request.
*
* #param \Illuminate\Http\Request $request
* #return array
*/
public function cards(Request $request)
{
return [];
}
/**
* Get the filters available for the resource.
*
* #param \Illuminate\Http\Request $request
* #return array
*/
public function filters(Request $request)
{
return [];
}
/**
* Get the lenses available for the resource.
*
* #param \Illuminate\Http\Request $request
* #return array
*/
public function lenses(Request $request)
{
return [];
}
/**
* Get the actions available for the resource.
*
* #param \Illuminate\Http\Request $request
* #return array
*/
public function actions(Request $request)
{
return [];
}
}
And The Model:
class Chain extends Model
{
use SoftDeletes;
use ObservantTrait;
use TranslationTrait;
protected $primaryKey = 'partner_chain_id';
protected $table = 'tbl_prm_partner_chain';
public $sequence = 'seq_partner_chain_id';
const CREATED_BY = 'insert_user';
const CREATED_AT = 'insert_timestamp';
const UPDATED_BY = 'update_user';
const UPDATED_AT = 'update_timestamp';
const DELETED_BY = 'delete_user';
const DELETED_AT = 'delete_timestamp';
protected $fillable = ['name_text', 'partner_type_id'];
protected $dates = ['delete_timestamp', 'insert_timestamp'];
thats all its quit simple, thats why i have no Clue right now where i am going wrong.