attempt to call a nil value when using skill

[fack13 1]

as the title says, attempt to call a nil value when using skill 

error message is

 

IsPlayerSkill

attempt to call nil value

[Dastgir 1244]

Get updated lua files: https://github.com/Asheraf/Translation

Edit:

 It seems you are using "Enable Custom Player Skills" patch from NEMO. but forgot to add "Support/Luafiles514/Lua Files/SkillInfoz/SkillType_F.lub" to your grf

[fack13 1]

edit: fixed by disabling Enable Custom Player Skills on NEMO. thanks for the answer tho