Assets\Snapshot Shaders Pro\URP\Scripts\Underwater.cs(181,72): error CS1061: 'UnderwaterSettings' does not contain a definition for 'causticsScrollVelocity' and no accessible extension method 'causticsScrollVelocity' accepting a first argument of type 'UnderwaterSettings' could be found (are you missing a using directive or an assembly reference?)

I don't need the underwater effect, so I just changed it to 'causticsScrollVelocity1' to get rid of the error, but hope that helps you fix it properly when you get time. Lovely pack otherwise.