Information

Full output of /ess version:

[21:32:54 INFO]: Server Version: 1.12.2-R0.1-SNAPSHOT git-Spigot-dcd1643-e60fc34 (MC: 1.12.2)
[21:32:54 INFO]: EssentialsX Version: 2.16.0.4
[21:32:54 INFO]: LuckPerms Version: 4.3.17
[21:32:54 INFO]: Vault Version: 1.7.1-b91
[21:32:54 INFO]: EssentialsXSpawn Version: 2.16.0.4

Server log: https://gist.github.com/StiegeRobin/7fd785025ef04402610b5285a943c114

EssentialsX config: https://gist.github.com/StiegeRobin/2f6447078b6c0cd898f0d693913df277

Details

Description
Enchanting items won't work.

Steps to reproduce

1. Get an item
2. Try /enchant alldamage 1
3. See console error

Could you update to 2.16.0.6 or later and see if this is resolved?

No worries - glad to hear this fixed the issue.

Yes, this fixed it. Thank you!