Getting 400 bad request while using 'whereIn'

[Subash]

I've been getting this error while trying to list the resources from OrderController@index() function. There are no parameters in index function.

$employeeID = array(1,2 );

$controllerAction = 'OrderController@index';
$uri = $this->uriGenerator($controllerAction);

$totalAmount = $this->totalAmountResourceCallable();

$results = function () use ($id) {
        return EloquentHelper::paginate(
            $this->serializer,
            Orders::query()->whereIn('employee_id', $employeeID)
        )->get();
    };

 return $resource->get($totalAmount, $results, $uri, Order::class);

Returned error is

{"errors":[{"status":400,"title":"Bad Request","detail":"Request could not be served."}]}

Is this an issue or I'm missing something?

[Subash]

$employeeID = array();
foreach($user->teams as $team)
{
    $employeeID[] = $team->id;
}

This one works
Orders::query()->whereIn('employee_id', [1,2,3]);

This one doesn't
Orders::query()->whereIn('employee_id', $employeeID);