title: Why is my main preview of the shader graphs pink?
body: <p>I recently learn the basics of shader graphs and am trying to explore some of the shader graphs.</p>
  <p>But I encountered a problem, my main preview of the shader is pink:</p>
  <p><a href="https://i.stack.imgur.com/tcEBV.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/tcEBV.png" alt="screenshot" /></a></p>
  <p><strong>FYI</strong>: I used URP Lit</p>
  <p>And it does the same with the object in the scene when I changed the materials to my shader. I've tried to follow the youtube tutorial on how to fix this issue too but it didn't seem to work for me.</p>
  <p><strong>How can I fix this issue?</strong></p>
  <p>Thank you for reading this far!! have a nice day!!:)</p>