Bas Water (Animated Caustics Water Material)
Why caustics are not visible?
Try to extract the zip file to a folder as all paths are absolute so it should work automatically
if not
Reload it by going to "find missing files" in "external data" menu as shown here
or you can just reload it from inside the node like this
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caustics animate cycles Water arch animated-water blender material baked summer22 spring24 viz procedural winter24