title: AWS Lambda Python Boto3 client.invoke() times out no matter what parameters are entered
body: <p>I am attempting to call one lambda function from another, and the code I am using in the calling function is:</p>
  <pre><code>client=boto3.client('lambda')
  services={'Image_Processor':'arn'}
  response=client.invoke(FunctionName=services[event['service']], InvocationType='DryRun', Payload=json.dumps(event))
  </code></pre>
  <p>There is no error message given, and I have tried setting the timeout duration as long as 10 minutes, but I still cannot get any result except:</p>
  <pre><code>{
    &quot;errorMessage&quot;: &quot;2021-08-12T17:13:18.946Z de2feefa-9923-40bd-a555-bf5de54712ee Task timed out after 20.02 seconds&quot;
  }
  </code></pre>
  <p>Any help would be very greatly appreciated.</p>