UNITY_REVERSED_Z not defined on 2021+

[philippds]

Hello. I have been trying to build using WebGL. It all works very well on i.e. Unity 2020.3.25f1, unfortunately when trying to do this on i.e. Unity 2021.2.10f1, I get an error in the Water.shader file saying: UNITY_REVERSED_Z is not defined. Unfortunately, I don't have any idea bout shaders. Any idea how to fix this? Thanks ~