Spatial Anchors without Open XR

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Hello

Is it possible to use spatial anchors without Open XR plugin?

I tried to do so, but after I create anchor I have this error:

DllNotFoundException: Unable to load DLL 'MicrosoftOpenXRPlugin': The specified module could not be found. at Microsoft.MixedReality.OpenXR.AnchorConverter.ToPerceptionSpatialAnchor (System.IntPtr nativePtr) [0x00000] in <00000000000000000000000000000000>:0 at Microsoft.Azure.SpatialAnchors.Unity.SpatialAnchorExtensions+<GetPointer>d__7.MoveNext () [0x00000] in <00000000000000000000000000000000>:0 at System.Runtime.CompilerServices.AsyncMethodBuilderCore+MoveNextRunner.InvokeMoveNext (System.Object stateMachine) [0x00000] in <00000000000000000000000000000000>:0

I'm using "Windows Mixed Reality" plugin in XR settings.