问访问时出错401

EN

    $clientId = "xxxx.apps.googleusercontent.com";
    $clientSecret = "XXXXX-YYYYYYYYYYYYY";
    
    $scopes = "https://www.googleapis.com/auth/photoslibrary https://www.googleapis.com/auth/photoslibrary.readonly https://www.googleapis.com/auth/photoslibrary.readonly.appcreateddata"
    # Open browser and authorise
    Start-Process "https://accounts.google.com/o/oauth2/v2/auth?client_id=$clientId&scope=$([string]::Join("%20", $scopes))&access_type=offline&response_type=code&redirect_uri=urn:ietf:wg:oauth:2.0:oob"    
     
    # paste auth code from browser
    $code = Read-Host "Please enter the code"
       
    application/x-www-form-urlencoded -Method POST -Body "client_id=$clientid&client_secret=$clientSecret&redirect_uri=urn:ietf:wg:oauth:2.0:oob&code=$code&grant_type=authorization_code"
    $token_uri = "https://www.googleapis.com/oauth2/v4/token"
    $redirect_uri = "urn:ietf:wg:oauth:2.0:oob";
    $grant_type = "authorization_code";
    $body = @{
        code = $code;
        client_id = $clientId;
        client_secret = $clientSecret;
        redirect_uri = $redirect_uri;
        grant_type = $grant_type;
      };
    $token = Invoke-RestMethod -Uri $token_uri -Method POST -Body $body -ContentType "application/x-www-form-urlencoded"
    $token.refresh_token
    # Working good, we get token correctly !!!

    # Now the faulty block
    $requestUri = "https://photoslibrary.googleapis.com/v1/albums?pagesize=20"  
    $method = "GET"
    $Headers = @{
        Authorization = "Bearer $($token.refresh_token)";
        ContentType = "application/json";
        }
    $body = $null

    # Throws 401
    try {
        $Response = Invoke-RestMethod -Headers $Headers -Uri $requestUri -Method $method
    }
    catch {
        $streamReader = [System.IO.StreamReader]::new($_.Exception.Response.GetResponseStream())
        $ErrResp = $streamReader.ReadToEnd() | ConvertFrom-Json
        $streamReader.Close()
    }
 $ErrResp  | ConvertTo-Json 

{
    "error":  {
                  "code":  401,
                  "message":  "Request had invalid authentication credentials. Expected OAuth 2 access token, login cookie or other valid authentication credential. See https://developers.google.com/identity/sign-in/web/devconsole-project.",
                  "status":  "UNAUTHENTICATED"
              }
}