[Bug] Cannot open Deck

### Service
Deckbuilder

### Description
Attemping to open deck results in Error 500 -- Attempting to create a Cube. Has been like this for a few weeks, after the initial save.

### Related link
https://altered.re/pages/deck?id=019f13f8-be3f-7627-a5bc-3e5ad45df420

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*Submitted via Altered Re:Union by chkdsk*