title: Cloudwatch filter works in console, but not in boto3
body: <p>I am using the boto3 logs client to find a specific log stream that contains a string. It is fairly simple, it is the &quot;requestID&quot; that lambda prints to the log when it first starts. When I filter on the console with a simple requestID string like &quot;3f2d1c8c-4ddf-4c67-a57f-5cec3e3e8739&quot;, it works and returns the correct log stream.</p>
  <p>When filtering through the boto3 API, it returns nothing despite the API showing that it fully searched that log stream.</p>
  <pre><code>log_events_resp = logs_client.filter_log_events(
          logGroupName='/aws/lambda/my-function-name',
          filterPattern=&quot;3f2d1c8c-4ddf-4c67-a57f-5cec3e3e8739&quot;
      )
  </code></pre>
  <p>what am I doing wrong? below is string I want to search for</p>
  <blockquote>
  <p>START RequestId: edca5feb-2c21-4c47-bc7c-562515094058 Version: $LATEST</p>
  </blockquote>
  <p>is the above a special part of the log in where it can't be search via boto3 or something?</p>