Did not find shader kernel

I’m using this shader pack: Unity Asset Store - The Best Assets for Game Making and Unity 2017.2.
During build this message always pops up:

Shader error in ‘Camo/Metallic/Cutout’: Did not find shader kernel ‘frag_surf’ to compile and building fails.

I desperately need this asset. There’s another way to fix this issue: roll-out to 5.6.x Unity version, that builds just fine. But is there any way to fix shader itself, or just wait for new version of Unity?

I have same problem.

My workaround for the error is reimporting the shader.

On the shader at the project tab, right click → reimport