title: Audience error while using firebase analytics on ios
body: <p>I built an iOS app that uses <a href="https://firebase.google.com/docs/analytics/" rel="noreferrer">Google Analytics for Firebase</a> to track user properties and events. </p>
  
  <p>When enabling the firebase logging, I get the following error:</p>
  
  <blockquote>
    <p>5.1.0 - [Firebase/Analytics][I-ACS006009] Audience definition is invalid. Audience will not be saved. Audience, error: , Error Domain=com.google.gmp.measurement.ErrorDomain
    Code=9 "Audience filter count out of range"
    UserInfo={NSLocalizedDescription=Audience filter count out of range}</p>
  </blockquote>
  
  <p>This error seems not to be associated with any particular line of code, but a general warning that there is a problem with the way I use GAforF.</p>
  
  <p>As this seems to be a common warning, was anyone able to fix this in their apps?</p>