title: AsyncTask.java cannot resolve symbol for Nullable, Mainthread, WorkerThread
body: <p>I'm pretty new to android studio, but i got this error and i can't run my project. I saw a lot of answers which suggest to add the <strong>support-annotations</strong> dependency, but I'm using appcompat so i don't need that. Any thoughts?</p>
  
  <p><a href="https://i.stack.imgur.com/qBu3l.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/qBu3l.png" alt="enter image description here"></a></p>