I updated Unity from 2018.2.* to 2018.3 and everything become pink. Standard Unity shaders work fine, but all the materials that I make with Amplify Shader Editor broken.
Errors that appear
https://gyazo.com/4a8ea6833a40e2ee1f1eaa19e0267659
I updated Amplify Shader Editor from asset store. Checked that SRPS asset added.