title: FIAM: firebase doesn't show message when triggering event
body: <p>I try to trigger event (firebase in-app message) programmatically, but firebase doesn't show any messages.</p>
  
  <p>In log I see it:</p>
  
  <pre><code>2019-07-30 16:47:07.514 1890-1918/ru.ed.com.test.debug W/FIAM.Headless: Recoverable exception while reading cache: /data/user/0/ru.ed.com.test.debug/files/fiam_eligible_campaigns_cache_file (No such file or directory)
  2019-07-30 16:47:07.515 1890-1918/ru.ed.com.test.debug W/FIAM.Headless: Recoverable exception while reading cache: /data/user/0/ru.ed.com.test.debug/files/fiam_impressions_store_file (No such file or directory)
  2019-07-30 16:47:07.523 1890-1918/ru.ed.com.test.debug I/FIAM.Headless: Fetching campaigns from service.
  2019-07-30 16:47:07.528 1890-1918/ru.ed.com.test.debug W/DynamiteModule: Local module descriptor class for providerinstaller not found.
  2019-07-30 16:47:07.540 1890-1918/ru.ed.com.test.debug I/DynamiteModule: Considering local module providerinstaller:0 and remote module providerinstaller:0
  2019-07-30 16:47:07.541 1890-1918/ru.ed.com.test.debug W/ProviderInstaller: Failed to load providerinstaller module: No acceptable module found. Local version is 0 and remote version is 0.
  2019-07-30 16:47:07.542 1890-1918/ru.ed.com.test.debug W/FIAM.Headless: Service fetch error: value
  </code></pre>
  
  <p>I triggered it like so:</p>
  
  <pre><code>FirebaseInAppMessaging.getInstance().triggerEvent("Draft campaign")
  </code></pre>
  
  <p>Can someone help me? What's problem?</p>