Ocean V3 errors

I keep getting the error ‘The name “Image Effects” does not exist in the current context’ I’m using the free version and it appears that Image Effects is in the pro version. Is there a way to run the ocean shader and ocean in the free version?

if you correspondingly modify them to not use unity pro functionality and not rely on shaders that come with the Pro Assets

What am I looking to modify? Right now I’m stabbing in the dark hoping I find Image Effects somehow.