Caustic artifacts

[mvpetropolis]

Hello, could someone help me about these artifacts that appeared in my image? I checked the caustic option for it to bounce only on the pool structure, when I isolate the pool and water only ñ this problem, I thought it could be the shadow of the umbrelone but he also isolated ñ gave this problem

[maru]

Hi, please check out "My caustics progressively disappear, there are black spots visible on my rendered caustics!" here: https://support.chaos.com/hc/en-us/articles/4954589213457

...or try our newest daily build where this should be fixed (but please remember that daily builds are experimental and you should make backups of scenes before opening them with daily builds) - https://forum.corona-renderer.com/index.php?topic=38385.0