title: AWS Boto3: The security token included in the request is invalid for AWS FORECAST
body: <p>I am trying to query forecast arn in aws but getting the following error :</p>
  
  <pre><code>import boto3 
  client = boto3.client('forecastquery')
  response = client.query_forecast(
      ForecastArn=' ',
      StartDate='2018-12-31T00:00:00',
      EndDate='2019-12-31T23:00:00',
      Filters={
          'item_id':' '
      }
      )
  print(response)
  </code></pre>
  
  <blockquote>
    <p>botocore.exceptions.ClientError: An error occurred
    (UnrecognizedClientException) when calling the QueryForecast
    operation: The security token included in the request is invalid.</p>
  </blockquote>