UI error on character preferences, never been in the server before

[MonkestationIssueBot]

Reporting client info: Client Information:
BYOND:515.1642
Key:desideratus

Round ID:

6429

Testmerges:

• Ore Processing Framework
• Species-nuking-port
• Experimental mitigation for glowshroom-induced lag
• [Fully-Modular] Adds a keybind to allow for pixel shifting of one's character, and items they are grabbing
• Optimize replays by implementing batch marking
• Buget cuts
• Scrubber overflows now use liquids
• admin smites but i put the files where they belong lmao
• [Port] More TG food
• Event Groups: morbillion anomalies begone!
• Revert "various minor /tg/ bugfixes"

Reproduction:

round start, opened character preferences, new person never been in the server

Error Details:
SyntaxError: Invalid character
at Anonymous function (http://127.0.0.1:56402/tgui.bundle.js:1:115888)
at c (http://127.0.0.1:56402/tgui.bundle.js:1:67533)
Asset Mappings: {
"fa-regular-400.ttf": "fa-regular-400.ttf",
"fa-solid-900.ttf": "fa-solid-900.ttf",
"fa-v4compatibility.ttf": "fa-v4compatibility.ttf",
"font-awesome.css": "asset.fedd834d1c20ed484599a1c38690e330.css",
"tgfont.eot": "tgfont.eot",
"tgfont.woff2": "tgfont.woff2",
"tgfont.css": "asset.7a36180900392e74d51328841ac9f8c7.css",
"spritesheet_preferences.css": "asset.327cfe23c8c3586823f694c3816a1f8d.css",
"preferences_32x32.png": "asset.cd01169f664c6346830efb717117ff41.png",
"preferences_64x32.png": "asset.0ab1ccfe07de3f032913c325179dd783.png",
"preferences_32x48.png": "asset.d4c40f2479ed7c3a6504e121944002cd.png",
"preferences.json": "asset.72dd3717f6f26ec98b15fd59c41750d0.json",
"spritesheet_antagonists.css": "asset.154c3dffd2c7d0ebd4a2b5a4c212838d.css",
"antagonists_96x96.png": "asset.5efd0fa13fde34e5197957e774350224.png",
"keybindings.json": "asset.0fd8f3dfd42ed7c3d84515dd5a436f4c.json",
"spritesheet_species.css": "asset.d8a0eabfac0f98ee2cd2b1f887986431.css",
"species_64x64.png": "asset.91a2956b79a64413f46b545d85e9a5e1.png"
}

[ThePooba]

happens on every first connect