livewire "render" method must run instance of View

Question

Hey I am trying to use livewire for the first time and I successfuly done the function and when its finish the function checkSingleLink() its shows this error :

"render" method on [App\Http\Livewire\SingleAsset] must return instance of [Illuminate\View\View]

the Livewire Model

namespace App\Http\Livewire;
use Illuminate\Http\Request;
use App\Models\Links;
use App\Models\Cron;


use Livewire\Component;

class SingleAsset extends Component
{

    public $saved = False;

    protected $fillable = [
        'keyword', 'data', 'updated_at'
    ];

    public function __construct() {
        $this->cron = new Cron();
    }

    public function render(Request $request)
    {
        if(Links::where('asset_id', '=', $request->id)->exists()){
            $links = Links::where('asset_id', '=', $request->id)->get();
            return view('livewire.single-asset', compact('links'));
        }
    }


    public function checkSingleLink(Links $link, $keyword) {
        // cron::fetchUrl($link->link, $keyword);
        $data = $this->cron->fetchUrl($link->link, $keyword);
        $link->keyword = $keyword;
        $link->data = $data;
        $link->save();
        // dd($this->cron->fetchUrl($link->link, $keyword));
        session()->flash('message', "link checked");
        $this->saved = TRUE;
       
    }
}

this is the location where I call the function

<input class="inputs" style="border:0;" type="text" value="{{$link->keyword}}" wire:keydown.enter="checkSingleLink({{$link}}, $event.target.value)"/>

this part of the calling and making the function working but after when he need to render again the response its not working