Crash upon changing BESS's character art

[xVff12]

Wanted to upload some custom art to reflect BESS's configuration and I was met with this regardless of reloading, different images, etc.:

Version: 0.9.001-PUBLIC#2089

Message: document.getElementById(...) is null

Stack:
get/<@https://www.fenoxo.com/play/TiTS/release/main.3965f8d9.js:1:11869330
s@https://www.fenoxo.com/play/TiTS/release/main.3965f8d9.js:1:10182693