I've just downloaded the project, placed it onto shaderspackers.
After start playing the world, eveything start becoming in black color

The information provided is not enough to address the issue. Please specify the Minecraft version, the shader version, which GPU you're using, and if you are using any mods. Check if the problem occurs consistently or only with certain mods. Otherwise, it’s impossible to understand the issue or how to approach it.

@javiergcim I think they were talking about this black effect that will appear while being under the water or after leaving underwater. It also acts like some sort of ink—it "leaks" and expands throughout the screen. This can be temporarily fixed by reloading the shader or trying to look away from it.

Here's the video of it:
https://github.com/user-attachments/assets/f2fa51e2-5aaf-4dc0-b4c8-448937bba02e

Here's my environment details:

• GPU: Nvidia GeForce GTX 1060 6GB
• Minecraft Version: 1.21.3
• Fabric Version: 0.16.9
• Iris Version: 1.8.0
• Shader Version: 9.1.0

And here are the mods that I was using.
mods.txt

And just in case you need it, here's the zip file of all mods that I use
mods.zip

Late reply, This kinda has something to do with the water fog, though. Because in the video, there was no water fog, and I think the black thing replaced it.

I just tried the 9.0.c version and this issue did not occur.