This is your toolbelt-error (->SMX):
2023-08-11T08:08:48 69.811 ERR [XUi] Error while updating window group 'toolbelt':
2023-08-11T08:08:48 69.815 EXC Method not found: int .Inventory.GetItemCount(ItemValue,bool,int,int)
at SMXcore.XUiC_HUDActiveItem.Update (System.Single _dt) [0x000a7] in <931c52e9547742feb872d92e1c835996>:0
at XUiController.Update (System.Single _dt) [0x0004f] in <d7dcfa4979674f179c13273f8b30b551>:0
at XUiController.Update (System.Single _dt) [0x0004f] in <d7dcfa4979674f179c13273f8b30b551>:0
at XUiController.Update (System.Single _dt) [0x0004f] in <d7dcfa4979674f179c13273f8b30b551>:0
at XUiController.Update (System.Single _dt) [0x0004f] in <d7dcfa4979674f179c13273f8b30b551>:0
at XUi.OnUpdateDeltaTime (System.Single updateDeltaTime) [0x00131] in <d7dcfa4979674f179c13273f8b30b551>:0
... and here you go for the solution (update SMX for 21.1):