ErrorException Return value of Spatie\Dashboard\Dashboard::getTheme() must be of the type string, null returned (View: E:\solaarslide\resources\views\dashboard\index.blade.php)

[mohsulthana]

I have followed the installation guide but I found this error
ErrorException Return value of Spatie\Dashboard\Dashboard::getTheme() must be of the type string, null returned (View: E:\solaarslide\resources\views\dashboard\index.blade.php)

Here's my controller

`public function index($folderName, $fileName, $id=false)
{
$id_user = session('user')['id'];
$list_panel = Panel::where('id_user', $id_user)->get();
$panel = null;
$user = null;
$energy = null;
$user_widget = [];

    if($id) {
        $panel = Panel::where(['id' => $id, 'id_user' => $id_user])->firstOrFail();
        $user_have_widget = PanelWidget::where('panel_id', $id)->get();
        
        foreach ($user_have_widget as $have) {
            $tmp = Widgets::firstWhere('id', $have['widget_id']);
            array_push($user_widget, [
                'id' => $tmp['id'],
                'order' => $have['order'],
                'content' => $tmp['content'],
                'image' => $tmp['image'],
                'graph_type' => $tmp['graph_type'],
                'graph_source' => $tmp['graph_source'],
                'status' => $tmp['status']
            ]);
        }
        $energy = $this->getData($id_user);
        if($energy===false) {
            return 'FTP connection error';
        }
        
    }
    // Render perticular view file by foldername and filename
    if (view()->exists($folderName . "." . $fileName)) {
        return view($folderName . "." . $fileName, compact('energy', 'panel', 'list_panel', 'user', 'user_widget'));
    }
    return abort(404);
}`

[nielsdrost7]

I would say that the config is not published.
It's looking for $defaultTheme = config('dashboard.theme'); and when you debug that on your end It's probably empty or non-existent