title: Xamarin 115 error message
body: <p>I'm new in Xamarin. I make a mistake yesterday by adding new package without checked dependency and then I uninstalled the package.But After that I received message below.</p>
  
  <p>I have tried uninstalled xamarin.forms package and installed again,clean solution and build solution but rebuild all failed.I don't know what mistake that I make.Hope you guys can help me solve this problem.Thank you in advance.</p>
  
  <p><a href="https://i.stack.imgur.com/ejBdH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ejBdH.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/FXvxk.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/FXvxk.png" alt="enter image description here"></a></p>