Prerequisites

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

Context

• Minecraft Version: 1.16.4
• MineColonies Version: 0.13.557
• Structurize Version: 0.13.104
• Forge Version: 1.16.4-35.1.31
• Related Mods and their Versions:

Expected behavior

No crash

Actual behavior

Minecraft crashed (single player)

Steps to reproduce the issue

1. Open the build options menu of asian barracks 3
2. Crash

Logs

• latest.log: https://gist.github.com/MatthiasMann/0610d14dddf115beca8f7e55546cdc92
• crashlog: https://gist.github.com/MatthiasMann/443d4794c980e948afc3c2f6e06a2965

Notes

The client crash is likely a follow up crash caused by this error: https://gist.github.com/MatthiasMann/6ef5f417588fae5e605b0c9bf35082cf
But I think the UI should be able to handle an empty resource list and disable the build button in that case.

Viewers

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Actually - the barracks displayed 'Barracks 2' in the first UI. But I did upgrade them from 2->3 before closing done Minecraft yesterday.
And as my builder had no open requests and didn't do anything - I assumed it finished upgrading.

Fixed