我尝试从TikTok oauth2端点获取refresh_token，但由于某种原因，它返回

"code" => 40115
  "message" => "Timestamp has expired."

我所做的是从应用管理面板中获取auth链接，然后返回到重定向URL并调用open_API/v1.3/oauth2/creator_token/？business=tt_user endpoint，具有client_id、client_secret、grant_type、auth_code，但我总是得到相同的消息。而且，如果我检查标题，它说一个即时日期。怎么会这样？

public function callback(Request $request)
{
    $accessTokenUrl = 'https://business-api.tiktok.com/open_api/v1.3/oauth2/creator_token/?business=tt_user';
    $response = Http::withHeaders([
            'Content-Type' => 'application/json',
        ])->post($accessTokenUrl, [
        "client_id" => env('TIKTOK_CLIENT_ID'),
        "client_secret" => env('TIKTOK_CLIENT_SECRET'),
        "grant_type" => "authorization_code",
        "auth_code" => $request['auth_code']
    ]);
    if($response->successful()) {
        dump($response->headers());
        dd($response->json());
    } else {
        dump($response->headers());
        dd($response->json());
    }
}