title: "Too many symbol files" warning when submitting app
body: <p>I submitted my app to the app store and received the following warning (not error):</p>
  
  <blockquote>
    <p>Too many symbol files - These symbols have no corresponding slice in
    any binary [XXXXXX-XXXXXX-XXXXXX-XXXXXX-XXXXXX.symbols,
    XXXXXX-XXXXXX-XXXXXX-XXXXXX-XXXXXX.symbols]</p>
  </blockquote>
  
  <p>What caused this issue? How can I fix it? Will it create issues with crash reporting to Crashlytics?</p>