Adding Watermark on a photo

I am trying to add a watermark on an image white uploading here is the code // create a new Image instance for inserting $watermark = Image::make(public_path('assets/images/brand/logo.png'));

    $img = $this->cover_image;
    $img->insert($watermark, 'center');

    $img->storeAs('product', $imageName);

    $vehicle->cover_image = $imageName;
    $vehicle->save();
    session()->flash('message', 'Add has been created successfully');
    $this->reset();

but i am geting an error. here is the error Method Livewire\TemporaryUploadedFile::insert does not exist. Help