• Minecraft Version (exact version number): 1.16.5
• Forge Version (exact version number): 36.1.15
• Mod Version (exact version number): 7.5.1
• Do you use Sponge, OptiFine or Vivecraft (and which?): OptiFine (still seems to happen without it)

Describe the bug
When I right click an unactivated waystone the game crashes. Happen to be holding orange wool in a taiga_hills biome. Crash log includes full mod list.

To Reproduce
Steps to reproduce the behavior:

1. Open my world that I've attached
2. Right-click the waystone I'm stood in front of
3. The waystone explodes ?!

Expected behavior
The waystone to activate and not crash the game :)

Screenshots
Frame before right-clicking and crashing (with debug menu open):

Additional context (e.g. Crash Log if it crashed)
Crash log (java.lang.NoSuchMethodError: org.apache.commons.lang3.ArrayUtils.shuffle([Ljava/lang/Object;)V):
crash-2021-05-15_20.31.41-client.txt

Config files (changed to txt to be uploaded here) (I've changed worldGenFrequency to 0 and forceSpawnInVillages to true because I wanted them to only generate in villages, not sure if that's important):
waystones-client.txt
waystones-common.txt

World: waystone test 2.zip

I seem to have found a workaround by changing the nameGenerationMode to "PRESET_FIRST" or "PRESET_ONLY". This might've been the default, I think I changed this to "MIXED" at some point after which the crashes started happening. The crash logs hint at line 17 of MixedNameGenerator.java being the problem.