Minecraft 1.18.2 with Forge 40.0.19 can't start with Charred.
In logs last strings:

[pool-3-thread-1/DEBUG] [mixin/]: Mixing FireToCharcoal from charred.mixins.json into net.minecraft.world.level.block.FireBlock
[pool-3-thread-1/DEBUG] [mixin/]: charred.mixins.json:FireToCharcoal: Class version 61 required is higher than the class version supported by the current version of Mixin (JAVA_16 supports class version 60)
[pool-3-thread-1/WARN] [mixin/]: Error loading class: net/minecraft/tags/Tag$Named (java.lang.ClassNotFoundException: net.minecraft.tags.Tag$Named)

Your mod is pretty good and it makes environment around lava lakes and fires more realistic. Do you have ideas what's wrong?

Well, I've got some time to upgrade Charred to Forge 40.0.19, looks like they changed how Tags worked, I'm trying to figure out how to upgrade your code

Here's build if somebody want it :)
charred-1.18.2-1.0.0.zip

Figured out a new way of how to check tags! And it's working! I will make PR with fix today :)

Fixed in #3