我正在使用谷歌翻譯（基本版）來翻譯一些字符串。幾分鐘前它工作正常，但現在它只返回錯誤 400。代碼非常簡單：function translatePhrase($text, $target, $source = 'it') {    $sourceLanguage = $source;    $targetLanguage = $target;     $translate = new TranslateClient();    $result = $translate->translate($text, [        'source' => $sourceLanguage,        'target' => $targetLanguage,    ]);    $output = $result['text'];    return $output;}它返回：Uncaught Google\Cloud\Core\Exception\BadRequestException: {"error": {"code": 400,"message": "Invalid Value","errors": [{"message": "Invalid Value","domain": "global","reason": "invalid"}]}}in \vendor\google\cloud-core\src\RequestWrapper.php:362Stack trace:#0 \vendor\google\cloud-core\src\RequestWrapper.php(206): Google\Cloud\Core\RequestWrapper->convertToGoogleException(Object(GuzzleHttp\Exception\ClientException))#1 \translate\vendor\google\cloud-core\src\RestTrait.php(95): Google\Cloud\Core\RequestWrapper->send(Object(GuzzleHttp\Psr7\Request), Array)#2 \translate\vendor\google\cloud-translate\src\V2\Connection\Rest.php(83): Google\Cloud\Translate\V2\Connection\Rest->send('translations', 'translate', Array)#3 \translate\vendor\google\cloud-translate\src\V2\TranslateClient.php(248): Google\Cloud\Translate\V2\Connection\Rest->listTrain [\translate\vendor\google\cloud-core\src\RequestWrapper.php riga 362]有什么想法嗎 ？