Describe the bug
When using the Loot Generator from RandomThings to spawn a chest, running /ct loottables target while loot at the chest gives no output in chat.

To Reproduce
Steps to reproduce the behavior:

1. Use the Loot Generator to spawn a chest with any loot table
2. Loot at the chest and run /ct loottables target
3. Check chat and see nothing in it after the command executes.

Expected behavior
An error message that reports a null table.

Screenshots
https://imgur.com/ybINtaw

Logs & scripts
N/A

Version Info (Exact versions only):
LootTweaker: 0.1.7+MC1.12.2
CraftTweaker/Minetweaker: 1.12-4.1.20.576
Forge: 14.23.5.2847
Minecraft: 1.12.2

Additional context
N/A