Input System Error Spam

[Waffle1434]

I get a constant stream of errors in the log when I hit play, without fail, every time even after project reload.

InvalidOperationException: You are trying to read Input using the UnityEngine.Input class, but you have switched active Input handling to Input System package in Player Settings.
UnityEngine.UIElements.DefaultEventSystem+Input.GetAxisRaw (System.String axis) (at <fe7a0fa708534184bcd39b65327ff33e>:0)
UnityEngine.UIElements.DefaultEventSystem.GetRawMoveVector () (at <fe7a0fa708534184bcd39b65327ff33e>:0)
UnityEngine.UIElements.DefaultEventSystem.ShouldSendMoveFromInput () (at <fe7a0fa708534184bcd39b65327ff33e>:0)
UnityEngine.UIElements.DefaultEventSystem.SendInputEvents () (at <fe7a0fa708534184bcd39b65327ff33e>:0)
UnityEngine.UIElements.DefaultEventSystem.Update (UnityEngine.UIElements.DefaultEventSystem+UpdateMode updateMode) (at <fe7a0fa708534184bcd39b65327ff33e>:0)
UnityEngine.UIElements.UIElementsRuntimeUtility.UpdateRuntimePanels () (at <fe7a0fa708534184bcd39b65327ff33e>:0)
UnityEngine.UIElements.UIElementsRuntimeUtilityNative.UpdateRuntimePanels () (at <1c87cf3086794d3c87ca91b65a06d402>:0)

I directly downloaded the v1.10 sample project and made no modifications. I'd suggest changing the Active Input Handling setting in Player Settings to Both as evidently something is still using it.