Using /loot to get most entities loot tables crashes your game

When you're using /loot to get some of the entities loot tables, the game simply crashes.

Step to Reproduce
1. Do /loot spawn ~ ~ ~ loot "entities/raider_drops"
2. Press enter.

Observed Result
The game becomes unresponsive and crashes.

Expected Result
Either it gives your intended entities loot tables, or if it can't, should throw an error message.