title: unity (Android bild), i have problem "We can't assign a new GUID because the asset is in an immutable folder. The asset will be ignored."
body: <p>I have unity 2019.3.7f1,
  2 sided libraries:</p>
  
  <pre><code>GooglePlayGamesPlugin-0.10.08
  GoogleMobileAds-v3.18.3
  </code></pre>
  
  <p>(it also installed "latest External Dependency Manager for Unity")</p>
  
  <p>And everything compiled perfectly on Android (apk)</p>
  
  <p>I added a library <code>Firebase 6.13.0</code> and got the following errors:
  <a href="https://i.stack.imgur.com/Ff2wi.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Ff2wi.png" alt="Err"></a>
  I read that you need to delete them and restart the project, it did not help, I also reinstalled all the libraries, it did not help.</p>
  
  <p>Has anyone had similar problems? Please help solve it.</p>