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:1.15.2
• MineColonies Version: 0.13.291-ALPHA-universal
• Structurize Version: 0.1386-ALPHA-universal
• Related Mods and their Versions: Valhelsia 2 modpack with adds Biomes of Plenty, Silent Gear, and the like.

Expected behavior

Stone smeltery to be functional past level 2

Actual behavior

When I build the stone smelter, it began to work as normal. However, once I upgraded it to level 2 and level 3, the npc showed this error. I tried restarting the npc, firing and rehiring, and gving the job to a new colonist and the same message appeared.

Steps to reproduce the issue

1. build the stone smelter
2. set recipes as: cobble to stone, each vanilla log to charcoal, clay to bricks, and clay block to terracotta
3. Upgrade Stone Smelter to level 2

Logs

• latest.log: https://gist.github.com/Jackpotmans/95d152af3ce5f9142453a2c3734b54b2
• crashlog:

Notes

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