Bug Animation Rigging is not working

When I click play, Console shows this error:

InvalidOperationException: The TransformStreamHandle cannot be resolved.
UnityEngine.Animations.TransformStreamHandle.CheckIsValidAndResolve (UnityEngine.Animations.AnimationStream& stream) (at <ad0a7939819048a0a161f66558c98867>:0)
UnityEngine.Animations.TransformStreamHandle.SetLocalTRS (UnityEngine.Animations.AnimationStream stream, UnityEngine.Vector3 position, UnityEngine.Quaternion rotation, UnityEngine.Vector3 scale, System.Boolean useMask) (at <ad0a7939819048a0a161f66558c98867>:0)
UnityEngine.Animations.Rigging.RigSyncSceneToStreamJob+TransformSyncer.Sync (UnityEngine.Animations.AnimationStream& stream) (at Library/PackageCache/com.unity.animation.rigging@1.0.3/Runtime/AnimationJobs/RigSyncSceneToStreamJob.cs:49)
UnityEngine.Animations.Rigging.RigSyncSceneToStreamJob.ProcessAnimation (UnityEngine.Animations.AnimationStream stream) (at Library/PackageCache/com.unity.animation.rigging@1.0.3/Runtime/AnimationJobs/RigSyncSceneToStreamJob.cs:117)
UnityEngine.Animations.ProcessAnimationJobStruct`1[T].Execute (T& data, System.IntPtr animationStreamPtr, System.IntPtr methodIndex, Unity.Jobs.LowLevel.Unsafe.JobRanges& ranges, System.Int32 jobIndex) (at <ad0a7939819048a0a161f66558c98867>:0)
UnityEngine.GUIUtilityrocessEvent(Int32, IntPtr, Boolean&)






Here is The Right Hand IK

it is also showing :Could not resolve 'Player1/MP7' because it is not a child Transform in the Animator hierarchy.
Could not resolve 'Player1/Rig Layer/Right_HandIK' because it is not a child Transform in the Animator hierarchy.
Could not resolve 'Player1/Rig Layer' because it is not a child Transform in the Animator
hierarchy.




What should I do???

 

i have the same problem and it came out of nowhere, it worked before

 

I just added the package, and I'm trying a really basic test, and I'm getting the same error...

 

My fix here:

https://forum.unity.com/threads/ongoing-humanoid-issues-in-animation-rigging.1080695/#post-7481213