MixedRealityToolkit-Unity: Azure spatial anchors not working in hololens 2 tutorial, build errors in Unity

Describe the bug

I followed this tutorial very carefully step-by-step: https://docs.microsoft.com/en-us/windows/mixed-reality/develop/unity/tutorials/mr-learning-asa-01

When I got this part https://docs.microsoft.com/en-us/windows/mixed-reality/develop/unity/tutorials/mr-learning-asa-02#trying-the-basic-behaviors-of-azure-spatial-anchors And tried to build it in unity I was able to get it built, but with a bunch of errors:

// errors separated with --
Missing security values in Resources\SpatialAnchorConfig
UnityEngine.Debug:LogWarning(Object)
SpatialAnchorsUnityBuildProcessing:OnPreprocessBuild(BuildReport) (at Assets/AzureSpatialAnchors.SDK/Editor/SpatialAnchorsUnityBuildProcessing.cs:107)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
--

Reference Rewriter found some errors while running with command "--target=Temp\StagingArea\Data\Managed\Assembly-CSharp.dll" "--target=Temp\StagingArea\Data\Managed\UnityEngine.SpatialTracking.dll" "--target=Temp\StagingArea\Data\Managed\UnityEngine.XR.LegacyInputHelpers.dll" "--target=Temp\StagingArea\Data\Managed\Microsoft.MixedReality.Toolkit.Services.TeleportSystem.dll" "--target=Temp\StagingArea\Data\Managed\Microsoft.MixedReality.Toolkit.Services.SpatialAwarenessSystem.dll" "--target=Temp\StagingArea\Data\Managed\Microsoft.MixedReality.Toolkit.Services.SceneSystem.dll" "--target=Temp\StagingArea\Data\Managed\Microsoft.MixedReality.Toolkit.Services.InputSystem.dll" "--target=Temp\StagingArea\Data\Managed\Microsoft.MixedReality.Toolkit.Services.InputSimulation.dll" "--target=Temp\StagingArea\Data\Managed\Microsoft.MixedReality.Toolkit.Services.InputAnimation.dll" "--target=Temp\StagingArea\Data\Managed\Microsoft.MixedReality.Toolkit.Services.DiagnosticsSystem.dll" "--target=Temp\StagingArea\Data\Managed\Microsoft.MixedReality.Toolkit.Services.CameraSystem.dll" "--target=Temp\StagingArea\Data\Managed\Microsoft.MixedReality.Toolkit.Services.BoundarySystem.dll" "--target=Temp\StagingArea\Data\Managed\Microsoft.MixedReality.Toolkit.Providers.XRSDK.WindowsMixedReality.dll" "--target=Temp\StagingArea\Data\Managed\Microsoft.MixedReality.Toolkit.Providers.XRSDK.dll" "--target=Temp\StagingArea\Data\Managed\Microsoft.MixedReality.Toolkit.Providers.WindowsVoiceInput.dll" "--target=Temp\StagingArea\Data\Managed\Microsoft.MixedReality.Toolkit.Providers.WindowsMixedReality.Shared.dll" "--target=Temp\StagingArea\Data\Managed\Microsoft.MixedReality.Toolkit.Providers.WindowsMixedReality.dll" "--target=Temp\StagingArea\Data\Managed\Microsoft.MixedReality.Toolkit.Gltf.dll" "--target=Temp\StagingArea\Data\Managed\Microsoft.MixedReality.Toolkit.dll" "--target=Temp\StagingArea\Data\Managed\Microsoft.MixedReality.Toolkit.Async.dll" "--target=Temp\StagingArea\Data\Managed\Microsoft.MixedReality.Toolkit.SDK.dll" "--target=Temp\StagingArea\Data\Managed\Unity.Subsystem.Registration.dll" "--target=Temp\StagingArea\Data\Managed\Unity.Timeline.dll" "--target=Temp\StagingArea\Data\Managed\Unity.TextMeshPro.dll" "--target=Temp\StagingArea\Data\Managed\Unity.XR.WindowsMR.dll" "--target=Temp\StagingArea\Data\Managed\Unity.XR.ARSubsystems.dll" "--target=Temp\StagingArea\Data\Managed\Unity.XR.ARFoundation.dll" "--target=Temp\StagingArea\Data\Managed\RestSharp.dll" "--additionalreferences=Temp\StagingArea\Data\Managed,Temp\StagingArea\Data\Managed\Plugins\X64,Temp\StagingArea\Data\Managed\Plugins\ARM,Temp\StagingArea\Data\Managed\Plugins\ARM64,Temp\StagingArea\Data\Managed\Plugins\X86" "--platform=C:\Program Files (x86)\Windows Kits\10\UnionMetadata\10.0.19041.0\Facade\Windows.winmd" "--dbg=pdb" "--framework=Temp\StagingArea\Data\Managed" "--alt=Microsoft.Win32.SafeHandles,mscorlib;System,mscorlib;System,System;System,System.ComponentModel.Composition;System,System.Core;System.CodeDom.Compiler,System;System.Collections,mscorlib;System.Collections.Concurrent,mscorlib;System.Collections.Concurrent,System;System.Collections.Generic,mscorlib;System.Collections.Generic,System;System.Collections.Generic,System.Core;System.Collections.ObjectModel,mscorlib;System.Collections.ObjectModel,System;System.Collections.Specialized,System;System.ComponentModel,System;System.ComponentModel.DataAnnotations,System.ComponentModel.DataAnnotations;System.ComponentModel.DataAnnotations.Schema,System.ComponentModel.DataAnnotations;System.Data,System.Data;System.Data.Common,System.Data;System.Diagnostics,mscorlib;System.Diagnostics,System;System.Diagnostics.CodeAnalysis,mscorlib;System.Diagnostics.Contracts,mscorlib;System.Diagnostics.Tracing,mscorlib;System.Dynamic,System.Core;System.Globalization,mscorlib;System.IO,mscorlib;System.IO,System;System.IO,System.Core;System.IO,System.Runtime.WindowsRuntime.UI.Xaml;System.IO.Compression,System;System.IO.Compression,System.IO.Compression.FileSystem;System.IO.IsolatedStorage,mscorlib;System.Linq,System.Core;System.Linq.Expressions,System.Core;System.Net,System;System.Net.NetworkInformation,System;System.Net.Security,System;System.Net.Sockets,System;System.Numerics,System.Numerics;System.Reflection,mscorlib;System.Reflection.Emit,mscorlib;System.Resources,mscorlib;System.Runtime,mscorlib;System.Runtime.CompilerServices,mscorlib;System.Runtime.CompilerServices,System.Core;System.Runtime.ExceptionServices,mscorlib;System.Runtime.InteropServices,mscorlib;System.Runtime.InteropServices,System;System.Runtime.InteropServices,System.Core;System.Runtime.InteropServices.ComTypes,mscorlib;System.Runtime.InteropServices.ComTypes,System;System.Runtime.InteropServices.WindowsRuntime,mscorlib;System.Runtime.Serialization,mscorlib;System.Runtime.Serialization,System.Runtime.Serialization;System.Runtime.Serialization.Json,System.Runtime.Serialization;System.Runtime.Versioning,mscorlib;System.Runtime.Versioning,System;System.Security,mscorlib;System.Security.Authentication,System;System.Security.Authentication.ExtendedProtection,System;System.Security.Claims,mscorlib;System.Security.Principal,mscorlib;System.ServiceModel,System.ServiceModel;System.ServiceModel.Channels,System.ServiceModel;System.ServiceModel.Description,System.ServiceModel;System.ServiceModel.Dispatcher,System.ServiceModel;System.ServiceModel.Security,System.ServiceModel;System.ServiceModel.Security.Tokens,System.ServiceModel;System.Text,mscorlib;System.Text.RegularExpressions,System;System.Threading,mscorlib;System.Threading,System;System.Threading,System.Core;System.Threading.Tasks,mscorlib;System.Threading.Tasks,System.Core;System.Windows.Input,System;System.Xml,System.Runtime.Serialization;System.Xml,System.Xml;System.Xml.Linq,System.Xml.Linq;System.Xml.Schema,System.Xml;System.Xml.Serialization,System.Xml;<winmd>,Windows.winmd;<winmd>,Windows.AI.MachineLearning.MachineLearningContract.winmd;<winmd>,Windows.AI.MachineLearning.Preview.MachineLearningPreviewContract.winmd;<winmd>,Windows.ApplicationModel.Calls.Background.CallsBackgroundContract.winmd;<winmd>,Windows.ApplicationModel.Calls.CallsPhoneContract.winmd;<winmd>,Windows.ApplicationModel.Calls.CallsVoipContract.winmd;<winmd>,Windows.ApplicationModel.CommunicationBlocking.CommunicationBlockingContract.winmd;<winmd>,Windows.ApplicationModel.SocialInfo.SocialInfoContract.winmd;<winmd>,Windows.ApplicationModel.StartupTaskContract.winmd;<winmd>,Windows.Devices.Custom.CustomDeviceContract.winmd;<winmd>,Windows.Devices.DevicesLowLevelContract.winmd;<winmd>,Windows.Devices.Printers.PrintersContract.winmd;<winmd>,Windows.Devices.SmartCards.SmartCardBackgroundTriggerContract.winmd;<winmd>,Windows.Devices.SmartCards.SmartCardEmulatorContract.winmd;<winmd>,Windows.Foundation.FoundationContract.winmd;<winmd>,Windows.Foundation.UniversalApiContract.winmd;<winmd>,Windows.Gaming.XboxLive.StorageApiContract.winmd;<winmd>,Windows.Graphics.Printing3D.Printing3DContract.winmd;<winmd>,Windows.Networking.Connectivity.WwanContract.winmd;<winmd>,Windows.Networking.Sockets.ControlChannelTriggerContract.winmd;<winmd>,Windows.Security.Isolation.IsolatedWindowsEnvironmentContract.winmd;<winmd>,Windows.Services.Maps.GuidanceContract.winmd;<winmd>,Windows.Services.Maps.LocalSearchContract.winmd;<winmd>,Windows.Services.Store.StoreContract.winmd;<winmd>,Windows.Services.TargetedContent.TargetedContentContract.winmd;<winmd>,Windows.Storage.Provider.CloudFilesContract.winmd;<winmd>,Windows.System.Profile.ProfileHardwareTokenContract.winmd;<winmd>,Windows.System.Profile.ProfileSharedModeContract.winmd;<winmd>,Windows.System.Profile.SystemManufacturers.SystemManufacturersContract.winmd;<winmd>,Windows.System.SystemManagementContract.winmd;<winmd>,Windows.UI.ViewManagement.ViewManagementViewScalingContract.winmd;<winmd>,Windows.UI.Xaml.Core.Direct.XamlDirectContract.winmd;<winmd>,Windows.ApplicationModel.Activation.ActivatedEventsContract.winmd;<winmd>,Windows.ApplicationModel.Activation.ActivationCameraSettingsContract.winmd;<winmd>,Windows.ApplicationModel.Activation.ContactActivatedEventsContract.winmd;<winmd>,Windows.ApplicationModel.Activation.WebUISearchActivatedEventsContract.winmd;<winmd>,Windows.ApplicationModel.Background.BackgroundAlarmApplicationContract.winmd;<winmd>,Windows.ApplicationModel.Calls.LockScreenCallContract.winmd;<winmd>,Windows.ApplicationModel.FullTrustAppContract.winmd;<winmd>,Windows.ApplicationModel.Preview.InkWorkspace.PreviewInkWorkspaceContract.winmd;<winmd>,Windows.ApplicationModel.Preview.Notes.PreviewNotesContract.winmd;<winmd>,Windows.ApplicationModel.Resources.Management.ResourceIndexerContract.winmd;<winmd>,Windows.ApplicationModel.Search.Core.SearchCoreContract.winmd;<winmd>,Windows.ApplicationModel.Search.SearchContract.winmd;<winmd>,Windows.ApplicationModel.Wallet.WalletContract.winmd;<winmd>,Windows.Devices.Portable.PortableDeviceContract.winmd;<winmd>,Windows.Devices.Printers.Extensions.ExtensionsContract.winmd;<winmd>,Windows.Devices.Scanners.ScannerDeviceContract.winmd;<winmd>,Windows.Devices.Sms.LegacySmsApiContract.winmd;<winmd>,Windows.Gaming.Input.GamingInputPreviewContract.winmd;<winmd>,Windows.Gaming.Preview.GamesEnumerationContract.winmd;<winmd>,Windows.Gaming.UI.GameChatOverlayContract.winmd;<winmd>,Windows.Gaming.UI.GamingUIProviderContract.winmd;<winmd>,Windows.Globalization.GlobalizationJapanesePhoneticAnalyzerContract.winmd;<winmd>,Windows.Management.Deployment.Preview.DeploymentPreviewContract.winmd;<winmd>,Windows.Management.Workplace.WorkplaceSettingsContract.winmd;<winmd>,Windows.Media.AppBroadcasting.AppBroadcastingContract.winmd;<winmd>,Windows.Media.AppRecording.AppRecordingContract.winmd;<winmd>,Windows.Media.Capture.AppBroadcastContract.winmd;<winmd>,Windows.Media.Capture.AppCaptureContract.winmd;<winmd>,Windows.Media.Capture.AppCaptureMetadataContract.winmd;<winmd>,Windows.Media.Capture.CameraCaptureUIContract.winmd;<winmd>,Windows.Media.Capture.GameBarContract.winmd;<winmd>,Windows.Media.Devices.CallControlContract.winmd;<winmd>,Windows.Media.MediaControlContract.winmd;<winmd>,Windows.Media.Playlists.PlaylistsContract.winmd;<winmd>,Windows.Media.Protection.ProtectionRenewalContract.winmd;<winmd>,Windows.Networking.NetworkOperators.LegacyNetworkOperatorsContract.winmd;<winmd>,Windows.Networking.XboxLive.XboxLiveSecureSocketsContract.winmd;<winmd>,Windows.Perception.Automation.Core.PerceptionAutomationCoreContract.winmd;<winmd>,Windows.Security.EnterpriseData.EnterpriseDataContract.winmd;<winmd>,Windows.Security.ExchangeActiveSyncProvisioning.EasContract.winmd;<winmd>,Windows.System.Profile.ProfileRetailInfoContract.winmd;<winmd>,Windows.System.UserProfile.UserProfileContract.winmd;<winmd>,Windows.System.UserProfile.UserProfileLockScreenContract.winmd;<winmd>,Windows.UI.ApplicationSettings.ApplicationsSettingsContract.winmd;<winmd>,Windows.UI.Core.AnimationMetrics.AnimationMetricsContract.winmd;<winmd>,Windows.UI.Core.CoreWindowDialogsContract.winmd;<winmd>,Windows.UI.Shell.SecurityAppManagerContract.winmd;<winmd>,Windows.UI.Xaml.Hosting.HostingContract.winmd;<winmd>,Windows.Web.Http.Diagnostics.HttpDiagnosticsContract.winmd;<winmd>,Windows.Embedded.DeviceLockdown.DeviceLockdownContract.winmd;<winmd>,Windows.Networking.NetworkOperators.NetworkOperatorsFdnContract.winmd;<winmd>,Windows.Phone.PhoneContract.winmd;<winmd>,Windows.Phone.StartScreen.DualSimTileContract.winmd;<winmd>,Windows.UI.WebUI.Core.WebUICommandBarContract.winmd;<winmd>,Windows.UI.Core.Preview.Communications.PreviewCommunicationsContract.winmd".
Error: type `System.Web.HttpUtility` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::UrlDecode(System.String).
Error: method `System.String System.Web.HttpUtility::UrlDecode(System.String)` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::UrlDecode(System.String).
Error: type `System.Web.HttpUtility` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::HtmlDecode(System.String).
Error: method `System.String System.Web.HttpUtility::HtmlDecode(System.String)` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::HtmlDecode(System.String).
Error: type `System.Web.HttpUtility` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::HtmlEncode(System.String).
Error: method `System.String System.Web.HttpUtility::HtmlEncode(System.String)` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::HtmlEncode(System.String).
Error: type `System.Web.HttpUtility` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::UrlEncode(System.String,System.Text.Encoding).
Error: method `System.String System.Web.HttpUtility::UrlEncode(System.String,System.Text.Encoding)` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::UrlEncode(System.String,System.Text.Encoding).
Error: type `System.Web.HttpUtility` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::HtmlAttributeEncode(System.String).
Error: method `System.String System.Web.HttpUtility::HtmlAttributeEncode(System.String)` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::HtmlAttributeEncode(System.String).
Error: type `System.Web.HttpUtility` doesn't exist in target framework. It is referenced from RestSharp.dll at RestSharp.Parameter RestSharp.Authenticators.OAuth1Authenticator/<>c::<AddOAuthData>b__69_9(RestSharp.Authenticators.OAuth.WebPair).
Error: method `System.String System.Web.HttpUtility::UrlDecode(System.String)` doesn't exist in target framework. It is referenced from RestSharp.dll at RestSharp.Parameter RestSharp.Authenticators.OAuth1Authenticator/<>c::<AddOAuthData>b__69_9(RestSharp.Authenticators.OAuth.WebPair).
Error: type `System.Web.HttpUtility` doesn't exist in target framework. It is referenced from RestSharp.dll at RestSharp.Authenticators.OAuth.OAuthWebQueryInfo RestSharp.Authenticators.OAuth.OAuthWorkflow::BuildProtectedResourceInfo(System.String,RestSharp.Authenticators.OAuth.WebParameterCollection,System.String).
Error: method `System.Collections.Specialized.NameValueCollection System.Web.HttpUtility::ParseQueryString(System.String)` doesn't exist in target framework. It is referenced from RestSharp.dll at RestSharp.Authenticators.OAuth.OAuthWebQueryInfo RestSharp.Authenticators.OAuth.OAuthWorkflow::BuildProtectedResourceInfo(System.String,RestSharp.Authenticators.OAuth.WebParameterCollection,System.String).

UnityEngine.Debug:LogError(Object)
PostProcessWinRT:RunReferenceRewriter() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:1162)
PostProcessWinRT:Process() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:206)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
--
Reference rewriter: Error: type `System.Web.HttpUtility` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::UrlDecode(System.String).
UnityEngine.Debug:LogError(Object)
PostProcessWinRT:RunReferenceRewriter() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:1164)
PostProcessWinRT:Process() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:206)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
--
Reference rewriter: Error: method `System.String System.Web.HttpUtility::UrlDecode(System.String)` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::UrlDecode(System.String).
UnityEngine.Debug:LogError(Object)
PostProcessWinRT:RunReferenceRewriter() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:1164)
PostProcessWinRT:Process() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:206)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
--
Reference rewriter: Error: type `System.Web.HttpUtility` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::HtmlDecode(System.String).
UnityEngine.Debug:LogError(Object)
PostProcessWinRT:RunReferenceRewriter() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:1164)
PostProcessWinRT:Process() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:206)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
--
Reference rewriter: Error: method `System.String System.Web.HttpUtility::HtmlDecode(System.String)` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::HtmlDecode(System.String).
UnityEngine.Debug:LogError(Object)
PostProcessWinRT:RunReferenceRewriter() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:1164)
PostProcessWinRT:Process() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:206)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
--
Reference rewriter: Error: type `System.Web.HttpUtility` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::HtmlEncode(System.String).
UnityEngine.Debug:LogError(Object)
PostProcessWinRT:RunReferenceRewriter() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:1164)
PostProcessWinRT:Process() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:206)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
--
Reference rewriter: Error: method `System.String System.Web.HttpUtility::HtmlEncode(System.String)` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::HtmlEncode(System.String).
UnityEngine.Debug:LogError(Object)
PostProcessWinRT:RunReferenceRewriter() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:1164)
PostProcessWinRT:Process() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:206)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
--
Reference rewriter: Error: type `System.Web.HttpUtility` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::UrlEncode(System.String,System.Text.Encoding).
UnityEngine.Debug:LogError(Object)
PostProcessWinRT:RunReferenceRewriter() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:1164)
PostProcessWinRT:Process() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:206)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
--
Reference rewriter: Error: method `System.String System.Web.HttpUtility::UrlEncode(System.String,System.Text.Encoding)` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::UrlEncode(System.String,System.Text.Encoding).
UnityEngine.Debug:LogError(Object)
PostProcessWinRT:RunReferenceRewriter() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:1164)
PostProcessWinRT:Process() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:206)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
--
Reference rewriter: Error: type `System.Web.HttpUtility` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::HtmlAttributeEncode(System.String).
UnityEngine.Debug:LogError(Object)
PostProcessWinRT:RunReferenceRewriter() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:1164)
PostProcessWinRT:Process() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:206)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
--
Reference rewriter: Error: method `System.String System.Web.HttpUtility::HtmlAttributeEncode(System.String)` doesn't exist in target framework. It is referenced from RestSharp.dll at System.String RestSharp.Extensions.StringExtensions::HtmlAttributeEncode(System.String).
UnityEngine.Debug:LogError(Object)
PostProcessWinRT:RunReferenceRewriter() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:1164)
PostProcessWinRT:Process() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:206)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
--
Reference rewriter: Error: type `System.Web.HttpUtility` doesn't exist in target framework. It is referenced from RestSharp.dll at RestSharp.Parameter RestSharp.Authenticators.OAuth1Authenticator/<>c::<AddOAuthData>b__69_9(RestSharp.Authenticators.OAuth.WebPair).
UnityEngine.Debug:LogError(Object)
PostProcessWinRT:RunReferenceRewriter() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:1164)
PostProcessWinRT:Process() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:206)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
--
Reference rewriter: Error: method `System.String System.Web.HttpUtility::UrlDecode(System.String)` doesn't exist in target framework. It is referenced from RestSharp.dll at RestSharp.Parameter RestSharp.Authenticators.OAuth1Authenticator/<>c::<AddOAuthData>b__69_9(RestSharp.Authenticators.OAuth.WebPair).
UnityEngine.Debug:LogError(Object)
PostProcessWinRT:RunReferenceRewriter() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:1164)
PostProcessWinRT:Process() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:206)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
--
Reference rewriter: Error: type `System.Web.HttpUtility` doesn't exist in target framework. It is referenced from RestSharp.dll at RestSharp.Authenticators.OAuth.OAuthWebQueryInfo RestSharp.Authenticators.OAuth.OAuthWorkflow::BuildProtectedResourceInfo(System.String,RestSharp.Authenticators.OAuth.WebParameterCollection,System.String).
UnityEngine.Debug:LogError(Object)
PostProcessWinRT:RunReferenceRewriter() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:1164)
PostProcessWinRT:Process() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:206)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
--
Reference rewriter: Error: method `System.Collections.Specialized.NameValueCollection System.Web.HttpUtility::ParseQueryString(System.String)` doesn't exist in target framework. It is referenced from RestSharp.dll at RestSharp.Authenticators.OAuth.OAuthWebQueryInfo RestSharp.Authenticators.OAuth.OAuthWorkflow::BuildProtectedResourceInfo(System.String,RestSharp.Authenticators.OAuth.WebParameterCollection,System.String).
UnityEngine.Debug:LogError(Object)
PostProcessWinRT:RunReferenceRewriter() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:1164)
PostProcessWinRT:Process() (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:206)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
--

//Visual studio 2019 errors appearing when opening the editor, probably not related:
error : Designtime build failed for project 'C:\"Path...\AzureSampleTwo.vcxproj' configuration 'Debug|ARM'. IntelliSense might be unavailable.
	Set environment variable TRACEDESIGNTIME = true and restart Visual Studio to investigate.
error : Designtime build failed for project 'C:\"Path..."\AzureSampleTwo.vcxproj' configuration 'Release|ARM'. IntelliSense might be unavailable.
	Set environment variable TRACEDESIGNTIME = true and restart Visual Studio to investigate.
error : Designtime build failed for project 'C:\C:\"Path..."\AzureSampleTwo.vcxproj' configuration 'Release|ARM64'. IntelliSense might be unavailable.
	Set environment variable TRACEDESIGNTIME = true and restart Visual Studio to investigate.
error : Designtime build failed for project 'C:\"Path..."\AzureSampleTwo.vcxproj' configuration 'Release|ARM64'. IntelliSense might be unavailable.
	Set environment variable TRACEDESIGNTIME = true and restart Visual Studio to investigate.
---

In the hololens 2 application, on step 3 (Create Azure Anchor) there’s an error message displayed. I’m having hard time getting the error message out completely from the app, if required I can dig deeper.

To reproduce

Steps to reproduce the behavior: Follow the tutorial linked in description and build in Unity, Try out the application and try to create an azure spatial anchor.

Expected behavior

A working unity build without error messages, a working sample hololens 2 application which doesn’t give errors when trying to create an azure spatial anchor.

Setup

• Unity Version 2019.3.15f1
• MRTK Version 2.4.0
• Windows 10 SDK 10.0.19041.1

Target platform

• HoloLens 2