this may possibly me on me, idk.
I had another set of wireframe shaders in the project but when I tried removing them, I got errors as well after importing
It's complaining about CGPROGRAM in the errors and also it cannot find some URP files.
Maybe you don't have URP installed? That means you have to make sure you have the Universal Render Pipeline package in your project.
- Go the the package manager
- From the drop down, choose "Unity Registry"
- On the search bar, type in Universal Render Pipeline
- Install the package selecting it and clicking install
You might need to restart unity. Please let me know how it goes!
This is the official documentation, that explains how to install it both in a project created from scratch and converting a built-in project: https://docs.unity3d.com/6000.0/Documentation/Manual/urp/InstallingAndConfiguringURP.html
There is a selection of types of projects and sometimes people start a new one with the built in pipeline.
A really quick test you could do is to create a blank URP project and import the package.
I hope that helped. If you still have any issues just leave me a comment here that I answer as soon as I can 😀
I got the shader working- it's fantastic.