[google-cloud-sql-discuss] How to get rid of error 401 on Cloud SQL API?

Hi, I have the following code in order to add an new authorized address into Google Cloud SQL :

$access_token = "ya29.GltEBBtlPfCr1F-20oQq7GU-ZZWW9J7R9ftQc5II5oSnr7IKZGk2iMDN9CcRDG_njDzKctfD6g6N5HxOYk1wjRoSJSMyDevEqdlIxWFjId5ZOLnqfHnprWmtWK6Q";
$headers = array('Authorization: Bearer ' . $access_token, 'Content-Type: application/json');

$send_method = "PATCH";
$payload = '{"settings" : {"ipConfiguration" : {"authorizedNetworks" : [{ "value": "220.20.0.1" }]}}}';


$settings = array(
 CURLOPT_CUSTOMREQUEST => $send_method,
 CURLOPT_RETURNTRANSFER => true,
 CURLOPT_HTTPHEADER => $headers,
 CURLOPT_SSL_VERIFYPEER => 0,
 CURLOPT_POSTFIELDS => $payload
 );
 
 
 $curl = curl_init($url);

 curl_setopt_array($curl, ($settings));


 $result = curl_exec($curl);

 curl_close($curl);

I know that my payload is OK because it works on https://cloud.google.com/sql/docs/mysql/admin-api/v1beta4/instances/patch .

I also know that the token is good because I got it from the oAuth playground.

I use a service account and I set myself as the owner of it.

Nevertheless, I get the following error (I also get it into the oAuth playground) :

{   "error": {    "errors": [     {      "domain": "global",      "reason": "required",      "message": "Login Required",      "locationType": "header",      "location": "Authorization"     }    ],    "code": 401,    "message": "Login Required"   }  }

What can I do?

Thanks!

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