尝试在 powershell runbook Azure 自动化帐户中调用 API 时出现错误 499

问：

当我尝试在 powershell runbook 中调用 Azure API 时，收到错误 499 响应。我假设存在超时问题。如果是这样，我应该在代码中采取哪些步骤来防止超时发生？代码如下：

$uri = "https://xxxxxxxx-xxxxxxxx-prod-api.azurewebsites.net/api/PortfolioExport?PortfolioBatchDate=9/9/9999"
$tenantId = "xxxxxxxx-xxxx-xxxx-xxxx-7181039d1ed4"
$clientId = "xxxxxxxxxxxx-xxxx-xxxx-xxxx-5268b21e2920"
$clientSecret = "xxxxxxxxxxxxxxxxxxxxxxxx~~U7n06yxQlc49"
$resource = "https://xxxxx.com/xxxxx.riskanalysis.app"

$tokenEndpoint = "https://login.microsoftonline.com/$tenantId/oauth2/token"
$body = @{
     grant_type = "client_credentials"
     client_id = $clientId
     client_secret = $clientSecret
     resource = $resource
     audience = $resource # Specify the audience parameter here
 }
 $response = Invoke-RestMethod -Method Post -Uri $tokenEndpoint -Body $body
 $accessToken = $response.access_token

 $headers = @{
     Authorization = "Bearer $accessToken"
 }

 Invoke-RestMethod -Method POST -Uri $uri -Headers $headers