Cant access Character Setup. gives me a warning character data is fine but the UI is not working

[MonkestationIssueBot]

Reporting client info: Client Information:
BYOND:515.1646
Key:varak

Round ID:

8393

Testmerges:

• [DNM] Aneri except I redid the branch again
• [Bounty] Oozling Membrane Murmur Ability
• Automatic weaponry, Syndicate Items and more!
• Pathology fixes
• testing to see if this fixes the looping sound timer runtimes
• Fix naked clownop leaders (+ nukeop code cleanup)
• [s] interview code tweaks
• turning the blushift aquarium into the monke box
• Bot bounties + Chameleon gloves translation
• [TG Port] Replace Heretic Phobia with Cursed Organs

Reproduction:

I try to access Character Setup but this message grays out the entire Character Setup screen and makes it impossible for me to access it "Error: Unable to fetch preferences clientside data.
(Your character data is OK, this is a UI error)
Contact a maintainer or create an issue report by pressing Report Issue in the top right of the game window.
Error Details:
SyntaxError: Invalid character
at Anonymous function (http://127.0.0.1:50345/tgui.bundle.js:1:115954)
at c (http://127.0.0.1:50345/tgui.bundle.js:1:67589)
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",
"icon_ref_map.json": "asset.08cfa2a6a10e46ce9772642c254a8f04.json",
"spritesheet_preferences.css": "asset.7e362fadae628cc762be44f390035a83.css",
"preferences_32x32.png": "asset.ae5cae94074f842f0882765fc503d687.png",
"preferences_64x32.png": "asset.0ab1ccfe07de3f032913c325179dd783.png",
"preferences_32x48.png": "asset.9759daba87bc1920bbae112db6ba8688.png",
"preferences.json": "asset.fd9067554057f2ef2d906d8bf25d48e0.json",
"spritesheet_antagonists.css": "asset.b69abc52cce7b31350665d0405e94492.css",
"antagonists_96x96.png": "asset.a7aaa0eb9101ac59a33f8a3b7eeebafd.png",
"keybindings.json": "asset.ece5fdc0fd7918ef3fd285a31b8674bb.json",
"spritesheet_species.css": "asset.5e51b75e540972689308d40ce1ea0ef4.css",
"species_64x64.png": "asset.a8a16ce2aaf7a17161448df6b5a0d0d1.png"
}
"

[Kitsunemitsu]

This one is going to be hard to reproduce and fix.

[DexeeXI]

Not enough proper info to go off of. Has been a transient issue for so long, but never enough info to hunt down why this goes off.