Prerequisites

• [x ] I am running the latest alpha version of MineColonies and Structurize for my Minecraft version.
• [ x] I checked the MineColonies/Structurize wiki and made sure my issue is not covered there.
• [x ] I made sure that this issue is not a duplicate of any existing issue.

Context

• Minecraft Version: 1.16.5
• MineColonies Version: *.220
• Structurize Version: *.177
• Related Mods and their Versions:

Expected behavior

When I add "minimum inventory" to the Miner's hut (like 1 stack of 64 cobblestone), I'd like to see this appear correctly.

Actual behavior

When I add any "minimum inventory" item to the Miner's Hut,
a) The new item doesn't appear in the GUI - I have to navigate to another tab and then back into the minimum tab.
b) Most of the time an item called "air" is added <-- error
c) The "air" error won't delete so it causes a "can add no more minimums" error

Steps to reproduce the issue

1. Build a medieval dark oak miner hut.
2. start setting minimum items in it
3. if the error replicates for you, you will a) not see the thing you added except after navigating away and then back and b) you may see "air" added as well.

Logs

• latest.log:
• crashlog:

Notes

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