Unity：新输入系统和旧事件系统之间的冲突

使用新的 InputSystem 时。如果我将 Canvas 组件添加到我的场景中，它会自动带来旧的 EventSystem 并且我在控制台中看到此错误：

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.Input.get_mousePosition () (at <213e6bf8f2dd495fbd693e6ce506136b>:0)
UnityEngine.UI.MultipleDisplayUtilities.GetMousePositionRelativeToMainDisplayResolution () (at /Applications/Unity/Hub/Editor/2020.1.14f1/Unity.app/Contents/Resources/PackageManager/BuiltInPackages/com.unity.ugui/Runtime/UI/Core/MultipleDisplayUtilities.cs:40)
UnityEngine.EventSystems.BaseInput.get_mousePosition () (at /Applications/Unity/Hub/Editor/2020.1.14f1/Unity.app/Contents/Resources/PackageManager/BuiltInPackages/com.unity.ugui/Runtime/EventSystem/InputModules/BaseInput.cs:75)
UnityEngine.EventSystems.StandaloneInputModule.UpdateModule () (at /Applications/Unity/Hub/Editor/2020.1.14f1/Unity.app/Contents/Resources/PackageManager/BuiltInPackages/com.unity.ugui/Runtime/EventSystem/InputModules/StandaloneInputModule.cs:175)
UnityEngine.EventSystems.EventSystem.TickModules () (at /Applications/Unity/Hub/Editor/2020.1.14f1/Unity.app/Contents/Resources/PackageManager/BuiltInPackages/com.unity.ugui/Runtime/EventSystem/EventSystem.cs:328)
UnityEngine.EventSystems.EventSystem.Update () (at /Applications/Unity/Hub/Editor/2020.1.14f1/Unity.app/Contents/Resources/PackageManager/BuiltInPackages/com.unity.ugui/Runtime/EventSystem/EventSystem.cs:343)

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