title: button and textview dont show on android studio basic layout
body: <p>when I open android studio in basic layout mode it doesn't show the next button and the textview. It was working when I installed it but then suddenly stopped. It first shows an exclamation mark(for error) in front of nav_host_fragment which i fix using the suggested fix provided by android studio but then everything goes away. I am new to android studio so I'm not sure if I'm missing anything.</p>
  
  <p><a href="https://i.stack.imgur.com/BM77r.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/BM77r.png" alt="enter image description here"></a></p>