Only running this plugin + Battle Engine Core/Core Engine and I get this error whenever I try to equip a weapon
TypeError: undefined is not a function
at Window_EquipItem.isMHAllowedWithOffHandWtypeId (file:///E:/RPGMVProjects/Project2/js/plugins/Ramza_DualWield.js:1568:37)
at Window_EquipItem.includes (file:///E:/RPGMVProjects/Project2/js/plugins/Ramza_DualWield.js:1608:33)
at Window_EquipItem.<anonymous> (file:///E:/RPGMVProjects/Project2/js/rpg_windows.js:1972:21)
at Array.filter (native)
at Window_EquipItem.Window_ItemList.makeItemList (file:///E:/RPGMVProjects/Project2/js/rpg_windows.js:1971:40)
at Window_EquipItem.Window_ItemList.refresh (file:///E:/RPGMVProjects/Project2/js/rpg_windows.js:2013:10)
at Window_EquipItem.setSlotId (file:///E:/RPGMVProjects/Project2/js/rpg_windows.js:2474:14)
at Window_EquipSlot.update (file:///E:/RPGMVProjects/Project2/js/rpg_windows.js:2391:26)
at file:///E:/RPGMVProjects/Project2/js/rpg_core.js:7029:19
at Array.forEach (native)