title: How to fix this error in android studio emulator?
body: <p>I am currently using android studio 3.4 version.emmulator is not working properly.there is no defect in the code.</p>
  
  <p>I tried a different version of the emulator but it not working properly.</p>
  
  <p>it showing the same error to the emulator.</p>
  
  <p>I am using ubantu 17.04 version</p>
  
  <blockquote>
    <p>9:08 AM    Emulator: emulator: ERROR: Unknown AVD name [Nexus_S_API_28], use -list-avds to see valid list.</p>
    
    <p>9:08 AM    Emulator: Process finished with exit code 1</p>
    
    <p>8:59 AM    Gradle build finished in 3 s 928 ms</p>
    
    <p>9:08 AM    Emulator: emulator: ERROR: Unknown AVD name [Nexus_S_API_28], use -list-avds to see valid list.</p>
    
    <p>9:08 AM    Emulator: Process finished with exit code 1</p>
  </blockquote>