title: Error: The apk for your currently selected variant (Unknown output) is not signed. Please specify a signing configuration for this variant (debug)
body: <p>After upgrading to Android Studio Arctic Fox (2020.3.1) Canary 9. I cannot run my tests. It pops up the <code>Edit Configurations</code> window to show <code>Error: The app for your currently selected variant (Unknown output) is not signed. Please specify a signing configuration for this variant (debug).</code> message. I can't seem to solve this issue just by creating <code>.jks</code> and using the release signing configuration for debug variant as well like most of the posts suggested. I'm kinda stuck between whether I downgrade or try to solve it somehow. Is there anyone who faced this issue before? Any suggestions and opinions are welcomed.</p>
  <p><a href="https://i.stack.imgur.com/1YRdE.png" rel="noreferrer"><img src="https://i.stack.imgur.com/1YRdE.png" alt="enter image description here" /></a></p>
  <blockquote>
  <p>Problem still occurs in Android Studio Arctic Fox (2020.3.1) Canary 10 version as well.</p>
  </blockquote>