Opening Menu during play mode

AbstractLeviathan

Hi,

I have set up a slot-based inventory system (based on the inventory container tutorial), but when i try to open it during playmode i just get the following Exception:

NullReferenceException: Object reference not set to an instance of an object
GamingIsLove.ORKFramework.UI.Parts.InventoryContainerMenuPart.CreateTypeList () (at <086f1092753e484c9c692cd660d75f2e>:0)
GamingIsLove.ORKFramework.UI.Parts.InventoryContainerMenuPart.Show (GamingIsLove.ORKFramework.UI.MenuScreen s) (at <086f1092753e484c9c692cd660d75f2e>:0)
GamingIsLove.ORKFramework.UI.MenuScreen.FinishOpening () (at <086f1092753e484c9c692cd660d75f2e>:0)
GamingIsLove.ORKFramework.UI.MenuScreen.Show (System.Boolean fromOtherScreen) (at <086f1092753e484c9c692cd660d75f2e>:0)
GamingIsLove.ORKFramework.UI.MenuScreen.Show () (at <086f1092753e484c9c692cd660d75f2e>:0)
GamingIsLove.ORKFramework.UI.MenuScreen.Tick () (at <086f1092753e484c9c692cd660d75f2e>:0)
GamingIsLove.ORKFramework.MenuHandler.Tick () (at <086f1092753e484c9c692cd660d75f2e>:0)
GamingIsLove.Makinom.Maki.FireTick () (at <fdaebd94ca174e6ca24350712ce9fbee>:0)
GamingIsLove.Makinom.MakinomHandler.Update () (at <fdaebd94ca174e6ca24350712ce9fbee>:0)

the console error only happens when i press the "i" key to open the inventory.

I have checked all the available inventory tutorial so far but i cant figure out how to fix the problem or if i have overlooked something. Help would be much appreciated. Thanks :)