title: Gradle: Task 'run' not found in root project
body: <p>I'm trying to use the task 'run' in gradle and it seems that it doesn't exist in my project.</p>
  
  <p>When I type in terminal:</p>
  
  <p><code>$ gradle run</code></p>
  
  <p>I get the error message: </p>
  
  <blockquote>
    <p>FAILURE: Build failed with an exception.</p>
    
    <p>What went wrong: Task 'run' not found in root project 'NA'.</p>
  </blockquote>
  
  <p>I also built the project again, got "BUILD SUCCESSFUL", and it still didn't help me to commit the 'run' task. </p>
  
  <p>How can I make 'run' task be useful again? </p>