title: Android studio: Run button not working
body: <p><img src="https://i.stack.imgur.com/exvYT.png" alt="enter image description here"></p>
  
  <p>When I try to run my app (my first test) for the first time, the green button shows up but the emulator does not run my app, it only works (the emulator) , and when I try again the green button( RUN) does not work.
  Anyone can help ? </p>