I dont understand why someone closed my issue. So Im pasting it again.

EssentialsX version (/essentials): 528
Server software (/version): git-Paper-1104 (MC: 1.11.2) (Implementing API version 1.11.2-R0.1-SNAPSHOT)
EssentialsX config (if applicable): default

I saved inventory with /kitcreate and it does not work correctly.
Video: https://youtu.be/WflkTHyp6tg

I'm using KitPreview plugin but it doesn't matter, It's Essentials problem.

Kit: https://gist.github.com/anonymous/7daff01e0b0201bea69fce7fffbabdd3

No. I'm not reporting any issue with config. Essentials has outdated kit saving. It does not support some items like spawning eggs when I'm trying to save it with command. I used /kitcreate with auto save and /kitcreate with pastebin. I pasted given link under kits: and I have still same problem. You can check last link in my post.

As stated before, you must copy your kit from the given link to your config.yml under kits:. If you've done this, please post your full config file including the kit.