오류로 버킷에 아래와 같은 내용의 글이 계속 뜨는데 어떡해야 하죠?  다른 애드온을 추가해야 하나요?

[Skript] Can't understand this condition/effect: set {Level::Current::%uuid of {_player}%} to arg 3 (Level.sk,

[Skript] Can't understand this expression: '{_p}.getOpenInventory().getTitle()' (Library.sk, line 37: set {_ti

'else' has to be placed just after an 'if' or 'else if' section (Library.sk, line 60: else:')19:02:33 | [Skript] This function is declared to return an integer, but '{_string}.length()' is not of that type. (Library.sk, line 65: return {_string}.length()')

[Skript] Can't understand this expression: 'Bukkit.createInventory({_p}, {_rows} * 9, "%{_title}%")' (Library.

[Skript] This function is declared to return a number, but '{_p}.getCooldown({_item}.getType())' is not of tha