I'm trying to migrate my project from 2019.2.3f1... everything works fine, except for the post processing effects. I'm getting the following error, and I think that's the source of the problem: GUID [9802e36ef1c38064d9bcd7bf2e01cccb] for asset 'Packages/com.unity.render-pipelines.lightweight/ShaderLibrary/Deprecated.hlsl.meta' conflicts with: 'Packages/com.unity.render-pipelines.universal/ShaderLibrary/Deprecated.hlsl.meta' We can't assign a new GUID because the asset is in an immutable folder. The asset will be ignored. In this blog post, there's the following text: [..and the Universal Render Pipeline (known as “Lightweight Render Pipeline” before 2019.3)] which apparently means the Universal RP deprecates the Lightweight RP... since both appear on the Package Manager, I thought I could safely remove the Lightweight RP but that doesn't seem to be the case. The error above mentioned indeed disappears after removing the LWRP and the post-processing effect works again, however all my prefabs became pink after that, besides all the my shaders are ShaderGraph shaders, and if I try to edit any of them, the editor shows a warning saying the master node is not supported on that render pipe line.