title: An internal error occurred during: "Launching Project". java.lang.NullPointerException
body: <p>My android project was compiling well but suddenly it stopped launching. Then I tried to launch other projects from Project Explorer and all project threw same exception:</p>
  
  <pre>An internal error occurred during: "Launching Project". java.lang.NullPointerException</pre>
  
  <p>But console always shows everything is normal.</p>
  
  <pre>Android Launch!
  adb is running normally.
  Performing com.mmcolrev.LoginActivity activity launch</pre>
  
  <p>Here's screenshot of error.</p>
  
  <p><a href="https://i.stack.imgur.com/Ds2FV.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Ds2FV.png" alt="enter image description here"></a></p>