file_put_contents(...): failed to open stream: Is a directory

I have fuction for upload image in base64:

public function upload(UploadImageRequest $request)
{
    $data = (\Request::input('image'));

    $decode = base64_decode(preg_replace('#^data:image/\w+;base64,#i', '', $data));
    $info = @getimagesizefromstring($decode);
    $extn = image_type_to_extension($info[2]);
    if ($extn ==".png"){
    $fullName = md5(time().uniqid()).$extn;
    Storage::disk('public')->put('images/',$fullName, $decode);

    $image = Image::make();

    $image->url = Storage::url($fullName);
    $image->saveOrFail();

    return Response::json($image, ResponseHttp::HTTP_CREATED);
    }
    else {dd(1);}
}

I try to save my image to public/image/ directory, but failed.

ERROR:

    (1/1) ErrorException
file_put_contents(/home/artem/PhpstormProjects/thefeedfeed-api/storage/app/public/images): failed to open stream: Is a directory

via Chebli Mohamed