Solve this bug. Help~~

[Leier0225]

When I switch tracks
#. Spline Controller (Script)
#. <General> Spline (CurvySpline)
#. <Move> Clamping (Loop <-> Clamp)

NullReferenceException: Object reference not set to an instance of an object
FluffyUnderware.Curvy.CurvySpline.GetTangent (Single tf, Vector3 position) (at Assets/Packages/Curvy/Base/CurvySpline.cs:1002)
FluffyUnderware.Curvy.Controllers.SplineController.getInterpolatedSourcePosition (FluffyUnderware.Curvy.CurvySplineBase spline, Single tf, UnityEngine.Vector3& position, UnityEngine.Vector3& tangent, UnityEngine.Vector3& up) (at Assets/Packages/Curvy/Controllers/SplineController.cs:616)
FluffyUnderware.Curvy.Controllers.SplineController.GetInterpolatedSourcePosition (Single tf, UnityEngine.Vector3& position, UnityEngine.Vector3& tangent, UnityEngine.Vector3& up) (at Assets/Packages/Curvy/Controllers/SplineController.cs:432)
FluffyUnderware.Curvy.CurvyController.Refresh () (at Assets/Packages/Curvy/Base/CurvyController.cs:885)
FluffyUnderware.Curvy.Controllers.SplineController.Refresh () (at Assets/Packages/Curvy/Controllers/SplineController.cs:310)
FluffyUnderware.Curvy.CurvyController.Update () (at Assets/Packages/Curvy/Base/CurvyController.cs:632)