create responsive search ads error

[LandonYin]

Which version of the client library are you using?
Latest master to date v5.0.0

Which version of PHP are you using?
7.3.4

Which operating system (Linux, Windows, ...) and version?
Windows10

Actions taken
I am creating a responsive search ad.I set the ad_group filed with reference to this example, but it still prompts me that ad_group is required, it looks like the setting does not take effect.
The following is my running code and log information, please help me find the problem. Thanks.

public function addGroupAd($customer_id,$group_id)
    {
        try{
            $adGroupResourceName = ResourceNames::forAdGroup($customer_id,$group_id);

            // Creates the responsive search ad info.
            $responsiveSearchAdInfo = new ResponsiveSearchAdInfo();
            $responsiveSearchAdInfo->setHeadlines([new AdTextAsset(['text'=> 'head1']),new AdTextAsset(['text'=> 'head2']),new AdTextAsset(['text'=> 'head3'])]);
            $responsiveSearchAdInfo->setDescriptions([new AdTextAsset(['text'=> 'desc1']),new AdTextAsset(['text'=> 'desc2'])]);
            $responsiveSearchAdInfo->setPath1('path1');
            $responsiveSearchAdInfo->setPath2('path2');

            // Builds the final ad group ad representation.
            $adGroupAd = new AdGroupAd([
                'ad_group' => $adGroupResourceName,
                'status'   => AdGroupAdStatus::PAUSED,
                'ad' => new Ad([
                    'final_urls' => ['http://www.example.com'],
                    'responsive_search_ad' => $responsiveSearchAdInfo
                ])
            ]);

            // Creates the operation
            $adGroupAdOperation = new AdGroupAdOperation();
            $adGroupAdOperation->setCreate($adGroupAd);

            // Creates the AdGroupAdServiceClient.
            $adGroupAdServiceClient = parent::client()->getAdGroupAdServiceClient();
            // Adds the AdGroup.
            $adGroupAdResponse = $adGroupAdServiceClient->mutateAdGroupAds($customer_id,[$adGroupAdOperation]);

            $createdAdGroupAdResourceName = $adGroupAdResponse->getResults()[0]->getResourceName();

            dd($createdAdGroupAdResourceName);

        }catch (ApiException $e){
            dd($e->getMessage());
        }
    }

Expected result
The ad was created successfully and get the ResourceName.

Actual result

{
    "message": "Request contains an invalid argument.",
    "code": 3,
    "status": "INVALID_ARGUMENT",
    "details": [
        {
            "@type": "google.ads.googleads.v5.errors.googleadsfailure-bin",
            "data": "<Unknown Binary Data>"
        },
        {
            "@type": "grpc-status-details-bin",
            "data": "<Unknown Binary Data>"
        },
        {
            "@type": "request-id",
            "data": "njrS61O59jkINDvZGgJOmg"
        }
    ]
}

Debug log
Please note that I have deleted the privacy information in the log. If you need the necessary ID and other information, please provide your email.

[2020-10-14T10:16:34.760635+08:00] google-ads.INFO: Request made: Host: "googleads.googleapis.com", Method: "/google.ads.googleads.v5.services.GoogleAdsService/SearchStream", CustomerId: "CustomerId", RequestId: "CustomerId", IsFault: 0, FaultMessage: "None"
[2020-10-14T10:16:36.165938+08:00] google-ads.WARNING: Request made: Host: "googleads.googleapis.com", Method: "/google.ads.googleads.v5.services.AdGroupAdService/MutateAdGroupAds", CustomerId: "CustomerId", RequestId: "RequestId", IsFault: 1, FaultMessage: "["Field 'ad_group' is required for 'CREATE' operation."]"
[2020-10-14T10:16:36.167285+08:00] google-ads.NOTICE: Request
-------
Method Name: /google.ads.googleads.v5.services.AdGroupAdService/MutateAdGroupAds
Host: googleads.googleapis.com
Headers: {
    "x-goog-api-client": "gl-php\/7.3.4 gapic\/ gax\/1.4.0 grpc\/1.28.0",
    "x-goog-request-params": "customer_id=customer_id",
    "developer-token": "REDACTED",
    "login-customer-id": "loginCustomerId"
}
Request: {"customerId":"customerId","operations":[{"create":{"status":"PAUSED","ad":{"finalUrls":["http:\/\/www.example.com"],"responsiveSearchAd":{"headlines":[{},{},{}],"descriptions":[{},{}]}}}}]}

Response
-------
Headers: {
    "request-id": "requestId",
    "date": "Wed, 14 Oct 2020 02:16:37 GMT",
    "alt-svc": "h3-Q050=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000,h3-27=\":443\"; ma=2592000,h3-T051=\":443\"; ma=2592000,h3-T050=\":443\"; ma=2592000,h3-Q046=\":443\"; ma=2592000,h3-Q043=\":443\"; ma=2592000,quic=\":443\"; ma=2592000; v=\"46,43\""
}

Fault
-------
Status code: 3
Details: Request contains an invalid argument.
Failure: {"errors":[{"errorCode":{"requestError":"REQUIRED_FIELD_MISSING"},"message":"Field 'ad_group' is required for 'CREATE' operation.","location":{"fieldPathElements":[{"fieldName":"operations","index":"0"},{"fieldName":"create"},{"fieldName":"ad_group"}]}}]}  

[PierrickVoulet]

I cannot replicate on my side. Not sure exactly why, but the body of the request you send is wrong: it does not include the ad_group and most of the responsive_search_ad fields even though you do seem to set them:

{"customerId":"customerId","operations":[{"create":{"status":"PAUSED","ad":{"finalUrls":["http:\/\/www.example.com"],"responsiveSearchAd":{"headlines":[{},{},{}],"descriptions":[{},{}]}}}}]}

What protobuf implementation and transport do you use? If you use the grpc or the protobuf PHP extensions, did you upgrade them to a compatible versions as per the requirements of the composer.json file?

[fiboknacky]

Closing due to inactivity.