Okay. So it looks like one of the shader files is completely empty for you, which is weird.
Can you check inside the game files to verify that the file is intact? The place to look is inside the game directory, at:
(It’s just a standard text file).
There should be around 70 lines in that file, but for some reason, the game has loaded zero lines from it, for you. Now, it might be a bug in my code which has broken things, or you might actually have a broken file somehow that Steam hasn’t noticed (in which case you’d want to Verify Integrity of the game files, in the game properties in Steam, to restore the file contents)