[1.16.5-1.6.0] File with invalid name in datapack causes server crash and hang

[TigerWalts]

Minecraft Version: 1.16.5

Forge Version: 36.2.42

Mod Version: 1.6.0

Single Player or Server: Server

Describe problem (what you were doing; what happened; what should have happened):

Server crashes with the error:

[06Jan2025 07:38:39.688] [main/WARN] [net.minecraft.server.Main/]: Failed to load datapacks, can't proceed with server load. You can either fix your datapacks or reset to vanilla with --safeMode
java.util.concurrent.ExecutionException: net.minecraft.util.ResourceLocationException: Non [a-z0-9/._-] character in path of location: forge:tags/blocks/cactus - Copy.json

I found the file inside Cyclic-1.16.5-1.6.0.jar at:

• data/forge/tags/blocks/cactus - Copy.json

There is also a:

• data/forge/tags/blocks/cactus.json

Removing the cactus - Copy.json file from the mod Jar file allows the server to start.