Game crashes upon opening

[skongplayer]

Oops! The game crashed:
[lovely json "libs/json/json.lua"]:185: unexpected character 'a' at line 1 col 1

Additional Context:
Balatro Version: 1.0.1o-FULL
Modded Version: 1.0.0BETA-1016c-STEAMODDED
LÖVE Version: 11.5.0
Lovely Version: 0.8.0
Platform: Windows
Steamodded Mods:
1: Multiplayer by Virtualized, see credits [ID: Multiplayer, Priority: 9.007199254741e+15, Version: 0.2.19DEV, Uses Lovely]
2: Card Sleeves by Larswijn [ID: CardSleeves, Priority: -10, Version: 1.8.0, Uses Lovely]
Lovely Mods:

Stack Traceback

(3) global C function 'error'
(4) Lua upvalue 'decode_error' at file 'libs/json/json.lua:185' (from lovely module json)
Local variables:
str = string: "action:connected"
idx = number: 1
msg = string: "unexpected character 'a'"
line_count = number: 1
col_count = number: 1
(5) Lua upvalue 'parse' at file 'libs/json/json.lua:371' (from lovely module json)
Local variables:
str = string: "action:connected"
idx = number: 1
chr = string: "a"
f = nil
(6) Lua field 'decode' at file 'libs/json/json.lua:379' (from lovely module json)
Local variables:
str = string: "action:connected"
(7) Lua upvalue 'gameUpdateRef' at file 'networking/action_handlers.lua:1011' (from mod with id Multiplayer)
Local variables:
self = table: 0x35f8dae0 {F_GUIDE:false, F_CRASH_REPORTS:false, F_QUIT_BUTTON:true, F_ENGLISH_ONLY:false, F_DISCORD:true, STAGE:1, F_MOBILE_UI:false, F_NO_SAVING:false (more...)}
dt = number: 0.00204928
msg = string: "action:connected"
(8) Lua upvalue 'game_update_ref' at file 'ui/lobby.lua:479' (from mod with id Multiplayer)
Local variables:
self = table: 0x35f8dae0 {F_GUIDE:false, F_CRASH_REPORTS:false, F_QUIT_BUTTON:true, F_ENGLISH_ONLY:false, F_DISCORD:true, STAGE:1, F_MOBILE_UI:false, F_NO_SAVING:false (more...)}
dt = number: 0.00204928
(9) Lua method 'update' at file 'misc/mod_hash.lua:44' (from mod with id Multiplayer)
Local variables:
self = table: 0x35f8dae0 {F_GUIDE:false, F_CRASH_REPORTS:false, F_QUIT_BUTTON:true, F_ENGLISH_ONLY:false, F_DISCORD:true, STAGE:1, F_MOBILE_UI:false, F_NO_SAVING:false (more...)}
dt = number: 0.00204928
(10) Lua field 'update' at file 'main.lua:1007'
Local variables:
dt = number: 0.00204928
(11) Lua function '?' at file 'main.lua:946' (best guess)
(12) global C function 'xpcall'
(13) LÖVE function at file 'boot.lua:377' (best guess)
Local variables:
func = Lua function '?' (defined at line 917 of chunk main.lua)
inerror = boolean: true
deferErrhand = Lua function '(LÖVE Function)' (defined at line 348 of chunk [love "boot.lua"])
earlyinit = Lua function '(LÖVE Function)' (defined at line 355 of chunk [love "boot.lua"])

[skongplayer]

card sleeves isnt the issue, i removed it and the game still crashed

[da1geek]

I am experiencing the same issue, with the same traceback (mostly)

[RyukesApple]

Im also having this issue regardless of mods installed, even with multiplayer mod its own, crashes before menu every time, im using the balatro mod manager. Tracecack is 1 for 1 to OP.