Describe the bug
A clear and concise description of what the bug is.
as soon as I launched with using a tag inside one of the Json, it crashed me to desktop

To Reproduce
Steps to reproduce the behavior:

1. Place block '...'
2. Right click on '...'
3. Do thing '...'
4. See error

example

[
{
"entry": "tag:minecraft:leaves",
"fluid": "minecraft:water",
"amount": 250
}
]
inside the Json and it crashed

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

Version
Minecraft Version: 1.15.2
Forge Version: 31.1.61
Ex Nihilo: Sequentia Version: 2020-08-09-11-59-99

Additional context
Add any other context about the problem here.
Stack traces and log files are nice to have. Submit all files through Gist or Pastebin and place the links here.

https://gist.github.com/BedrockLegends/ff3ff610c56785213d3817f639aca166

The Minecraft tag for leaves is "minecraft:leaves".

See the Minecraft Wiki.