title: INSTALL_PARSE_FAILED_NO_CERTIFICATES on a debug build when using 'Run' button
body: <p>So I was just making a toy app to test capturing photos and video for an app at work. I set up everything in a standard fashion, make a small activity and when I try to use the 'Run' command in android studio to install on my device, I get the following error:</p>
  
  <pre><code>11/28 11:14:32: Launching 'app' on Unknown Device.
  Installation did not succeed.
  The application could not be installed: INSTALL_PARSE_FAILED_NO_CERTIFICATES
  APK signature verification failed.
  Retry
  </code></pre>
  
  <p>I tried searching google as to why this might happen, but I only found things concerning the generation of a signed apk and usually in a release build. I have done no signing configs on this project. It's basically a standard Android Studio generated project. Here's a screenshot of my gradle file:</p>
  
  <p><a href="https://i.stack.imgur.com/MlOlB.png" rel="nofollow noreferrer">module-gradle-file</a></p>
  
  <p>Has anyone encountered this problem? I'm using Android Studio 3.5, gradle 5.4.1 and gradle plugin 3.5.0</p>
  
  <p><strong>UPDATE</strong></p>
  
  <p>So, I decided to just restart the adb server and it worked. The question of why this happened, though, remains</p>