[WFRP4e System] skill xp modifier broken

[moo-man]

After manually changing the XP modifier on a skill the character sheet won't open Example: The character has the talent Witch! so I modified Language (Magick) xp modifier to -5, after doing that it won't open anymore, I've tried with other skills same thing happnes

Got this two eerrors on console:

foundry.js:655 Error: An error occurred while rendering ActorSheetWFRP4eCharacter 72. Cannot read properties of undefined (reading 'toLowerCase') [Detected 2 packages: system:wfrp4e(8.0.4), warhammer-lib(1.0.2)] at Hooks.onError (foundry.js:654:24) at 🎁call_wrapped [as call_wrapped] (libWrapper-wrapper.js:507:22) at 🎁Hooks.onError#lib-wrapper (listeners.js:140:11) at 🎁Hooks.onError#0 (libWrapper-wrapper.js:187:52) at foundry.js:5795:13

warhammer.js:323 Script Add Language (Magick) threw error: ReferenceError: actor is not defined. Context and Arguments: Object Object
From: akygat
foundry: 12.331
wfrp4e: 8.0.4
wfrp4e-altdorf: 6.0.0
wfrp4e-archives1: 6.0.0
wfrp4e-archives2: 6.0.0
wfrp4e-core: 6.0.0
wfrp4e-dotr: 6.0.0
wfrp4e-eis: 6.0.0
wfrp4e-horned-rat: 6.0.0
wfrp4e-lustria: 6.0.0
wfrp4e-middenheim: 6.0.0
wfrp4e-pbtt: 6.0.0
wfrp4e-rnhd: 6.0.0
wfrp4e-salzenmund: 6.0.0
wfrp4e-soc: 6.0.0
wfrp4e-starter-set: 6.0.0
wfrp4e-ua1: 6.0.0
wfrp4e-up-in-arms: 6.0.0
wfrp4e-wom: 6.0.0
wfrp4e-zoo: 6.0.0
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[moo-man]

Issue is resolved, but your data is corrupted from before the update.