Bug Debugging help for Face Tracking + MARS

Hi - I don't know if this is a MARS specific issue but face tracking is not working at all for me. I've tried simple hello world type tests, both on a new ipad and iphone 12 and its not working. In simulation mode it is working on the example video feed but once i build it to my ios device -- nothing. Body tracking works fine, only face tracking is not working. All the newest packages are installed via package manager.

The only thing I can think of is to revert to older ARKit / Unity foundation package version, but there isn't even a way in Package Manager to revert to older versions anymore

Unity version: 2021.2.18 (also on 2021.2.16)
ARKit / AR Foundation version: 4.2.2
IOS version: 15.4.1

 

Here is the debug logs from xcode when I run my app::

Code (CSharp):

1.  
2. 2022-04-05 11:38:27.931558-0500 mirror[2254:341142] Built from '2021.2/staging' branch, Version '2021.2.18f1 (0c6e675195cf)', Build type 'Development', Scripting Backend 'il2cpp'
3.  
4. 2022-04-05 11:38:27.932633-0500 mirror[2254:341142] MemoryManager: Using 'Default' Allocator.
5.  
6. [UnityMemory] Configuration Parameters - Can be set up in boot.config
7.  
8.     "memorysetup-bucket-allocator-granularity=16"
9.  
10.     "memorysetup-bucket-allocator-bucket-count=8"
11.  
12.     "memorysetup-bucket-allocator-block-size=4194304"
13.  
14.     "memorysetup-bucket-allocator-block-count=1"
15.  
16.     "memorysetup-main-allocator-block-size=16777216"
17.  
18.     "memorysetup-thread-allocator-block-size=16777216"
19.  
20.     "memorysetup-gfx-main-allocator-block-size=16777216"
21.  
22.     "memorysetup-gfx-thread-allocator-block-size=16777216"
23.  
24.     "memorysetup-cache-allocator-block-size=4194304"
25.  
26.     "memorysetup-typetree-allocator-block-size=2097152"
27.  
28.     "memorysetup-profiler-bucket-allocator-granularity=16"
29.  
30.     "memorysetup-profiler-bucket-allocator-bucket-count=8"
31.  
32.     "memorysetup-profiler-bucket-allocator-block-size=4194304"
33.  
34.     "memorysetup-profiler-bucket-allocator-block-count=1"
35.  
36.     "memorysetup-profiler-allocator-block-size=16777216"
37.  
38.     "memorysetup-profiler-editor-allocator-block-size=1048576"
39.  
40.     "memorysetup-temp-allocator-size-main=4194304"
41.  
42.     "memorysetup-job-temp-allocator-block-size=2097152"
43.  
44.     "memorysetup-job-temp-allocator-block-size-background=1048576"
45.  
46.     "memorysetup-job-temp-allocator-reduction-small-platforms=262144"
47.  
48.     "memorysetup-temp-allocator-size-background-worker=32768"
49.  
50.     "memorysetup-temp-allocator-size-job-worker=262144"
51.  
52.     "memorysetup-temp-allocator-size-preload-manager=262144"
53.  
54.     "memorysetup-temp-allocator-size-nav-mesh-worker=65536"
55.  
56.     "memorysetup-temp-allocator-size-audio-worker=65536"
57.  
58.     "memorysetup-temp-allocator-size-cloud-worker=32768"
59.  
60.     "memorysetup-temp-allocator-size-gfx=262144"
61.  
62. -> applicationDidFinishLaunching()
63.  
64. Found 3 interfaces on host : 0) 10.93.2.11 1) 162.165.5.241 2) 192.168.100.13
65.  
66. Multi-casting "[IP] 10.93.2.11 [Port] 55000 [Flags] 2 [Guid] 171254066 [EditorId] 485543332 [Version] 1048832 [Id] iPhonePlayer(8,iPhone):56000 [Debug] 0 [PackageName] iPhonePlayer [ProjectName] mirror" to [225.0.0.222:54997]...
67.  
68. 2022-04-05 11:38:28.116547-0500 mirror[2254:341142] Metal GPU Frame Capture Enabled
69.  
70. 2022-04-05 11:38:28.116659-0500 mirror[2254:341142] Metal API Validation Enabled
71.  
72.  
73. Setting UIViewControllerBasedStatusBarAppearance to NO is no longer supported.
74.  
75. Apple actively discourages that, and all application-wide methods of changing status bar appearance are deprecated
76.  
77.  
78. -> applicationDidBecomeActive()
79.  
80. [Subsystems] Discovering subsystems at path /private/var/containers/Bundle/Application/DA5AF9E7-D186-43CC-AF4E-1B1634649441/mirror.app/Data/UnitySubsystems
81.  
82. [Subsystems] No descriptors matched for  examples in UnitySubsystems/UnityARKit/UnitySubsystemsManifest.json.
83.  
84. [Subsystems] 1 'inputs' descriptors matched in UnitySubsystems/UnityARKit/UnitySubsystemsManifest.json
85.  
86. [Subsystems] No descriptors matched for  displays in UnitySubsystems/UnityARKit/UnitySubsystemsManifest.json.
87.  
88. [Subsystems] 1 'meshings' descriptors matched in UnitySubsystems/UnityARKit/UnitySubsystemsManifest.json
89.  
90. GfxDevice: creating device client; threaded=1; jobified=1
91.  
92. Initializing Metal device caps: Apple A14 GPU
93.  
94. Initialize engine version: 2021.2.18f1 (0c6e675195cf)
95.  
96. XRGeneral Settings awakening...
97.  
98. UnityEngine.DebugLogHandler:Internal_Log(LogType, LogOption, String, Object)
99.  
100. UnityEngine.DebugLogHandler:LogFormat(LogType, Object, String, Object[])
101.  
102. UnityEngine.Logger:Log(LogType, Object)
103.  
104. UnityEngine.Debug:Log(Object)
105.  
106. UnityEngine.XR.Management.XRGeneralSettings:Awake()
107.  
108.  
109. 2022-04-05 11:38:28.936450-0500 mirror[2254:341142]
110.  
111.     // 2D joint skeleton
112.  
113.     enum JointIndices
114.  
115.     {
116.  
117.         Invalid = -1,
118.  
119.         Head = 0, // parent: Neck1 [1]
120.  
121.         Neck1 = 1, // parent: Root [16]
122.  
123.         RightShoulder1 = 2, // parent: Neck1 [1]
124.  
125.         RightForearm = 3, // parent: RightShoulder1 [2]
126.  
127.         RightHand = 4, // parent: RightForearm [3]
128.  
129.         LeftShoulder1 = 5, // parent: Neck1 [1]
130.  
131.         LeftForearm = 6, // parent: LeftShoulder1 [5]
132.  
133.         LeftHand = 7, // parent: LeftForearm [6]
134.  
135.         RightUpLeg = 8, // parent: Root [16]
136.  
137.         RightLeg = 9, // parent: RightUpLeg [8]
138.  
139.         RightFoot = 10, // parent: RightLeg [9]
140.  
141.         LeftUpLeg = 11, // parent: Root [16]
142.  
143.         LeftLeg = 12, // parent: LeftUpLeg [11]
144.  
145.         LeftFoot = 13, // parent: LeftLeg [12]
146.  
147.         RightEye = 14, // parent: Head [0]
148.  
149.         LeftEye = 15, // parent: Head [0]
150.  
151.         Root = 16, // parent: <none> [-1]
152.  
153.     }
154.  
155. 2022-04-05 11:38:28.940726-0500 mirror[2254:341142]
156.  
157.     // 3D joint skeleton
158.  
159.     enum JointIndices
160.  
161.     {
162.  
163.         Invalid = -1,
164.  
165.         Root = 0, // parent: <none> [-1]
166.  
167.         Hips = 1, // parent: Root [0]
168.  
169.         LeftUpLeg = 2, // parent: Hips [1]
170.  
171.         LeftLeg = 3, // parent: LeftUpLeg [2]
172.  
173.         LeftFoot = 4, // parent: LeftLeg [3]
174.  
175.         LeftToes = 5, // parent: LeftFoot [4]
176.  
177.         LeftToesEnd = 6, // parent: LeftToes [5]
178.  
179.         RightUpLeg = 7, // parent: Hips [1]
180.  
181.         RightLeg = 8, // parent: RightUpLeg [7]
182.  
183.         RightFoot = 9, // parent: RightLeg [8]
184.  
185.         RightToes = 10, // parent: RightFoot [9]
186.  
187.         RightToesEnd = 11, // parent: RightToes [10]
188.  
189.         Spine1 = 12, // parent: Hips [1]
190.  
191.         Spine2 = 13, // parent: Spine1 [12]
192.  
193.         Spine3 = 14, // parent: Spine2 [13]
194.  
195.         Spine4 = 15, // parent: Spine3 [14]
196.  
197.         Spine5 = 16, // parent: Spine4 [15]
198.  
199.         Spine6 = 17, // parent: Spine5 [16]
200.  
201.         Spine7 = 18, // parent: Spine6 [17]
202.  
203.         LeftShoulder1 = 19, // parent: Spine7 [18]
204.  
205.         LeftArm = 20, // parent: LeftShoulder1 [19]
206.  
207.         LeftForearm = 21, // parent: LeftArm [20]
208.  
209.         LeftHand = 22, // parent: LeftForearm [21]
210.  
211.         LeftHandIndexStart = 23, // parent: LeftHand [22]
212.  
213.         LeftHandIndex1 = 24, // parent: LeftHandIndexStart [23]
214.  
215.         LeftHandIndex2 = 25, // parent: LeftHandIndex1 [24]
216.  
217.         LeftHandIndex3 = 26, // parent: LeftHandIndex2 [25]
218.  
219.         LeftHandIndexEnd = 27, // parent: LeftHandIndex3 [26]
220.  
221.         LeftHandMidStart = 28, // parent: LeftHand [22]
222.  
223.         LeftHandMid1 = 29, // parent: LeftHandMidStart [28]
224.  
225.         LeftHandMid2 = 30, // parent: LeftHandMid1 [29]
226.  
227.         LeftHandMid3 = 31, // parent: LeftHandMid2 [30]
228.  
229.         LeftHandMidEnd = 32, // parent: LeftHandMid3 [31]
230.  
231.         LeftHandPinkyStart = 33, // parent: LeftHand [22]
232.  
233.         LeftHandPinky1 = 34, // parent: LeftHandPinkyStart [33]
234.  
235.         LeftHandPinky2 = 35, // parent: LeftHandPinky1 [34]
236.  
237.         LeftHandPinky3 = 36, // parent: LeftHandPinky2 [35]
238.  
239.         LeftHandPinkyEnd = 37, // parent: LeftHandPinky3 [36]
240.  
241.         LeftHandRingStart = 38, // parent: LeftHand [22]
242.  
243.         LeftHandRing1 = 39, // parent: LeftHandRingStart [38]
244.  
245.         LeftHandRing2 = 40, // parent: LeftHandRing1 [39]
246.  
247.         LeftHandRing3 = 41, // parent: LeftHandRing2 [40]
248.  
249.         LeftHandRingEnd = 42, // parent: LeftHandRing3 [41]
250.  
251.         LeftHandThumbStart = 43, // parent: LeftHand [22]
252.  
253.         LeftHandThumb1 = 44, // parent: LeftHandThumbStart [43]
254.  
255.         LeftHandThumb2 = 45, // parent: LeftHandThumb1 [44]
256.  
257.         LeftHandThumbEnd = 46, // parent: LeftHandThumb2 [45]
258.  
259.         Neck1 = 47, // parent: Spine7 [18]
260.  
261.         Neck2 = 48, // parent: Neck1 [47]
262.  
263.         Neck3 = 49, // parent: Neck2 [48]
264.  
265.         Neck4 = 50, // parent: Neck3 [49]
266.  
267.         Head = 51, // parent: Neck4 [50]
268.  
269.         Jaw = 52, // parent: Head [51]
270.  
271.         Chin = 53, // parent: Jaw [52]
272.  
273.         LeftEye = 54, // parent: Head [51]
274.  
275.         LeftEyeLowerLid = 55, // parent: LeftEye [54]
276.  
277.         LeftEyeUpperLid = 56, // parent: LeftEye [54]
278.  
279.         LeftEyeball = 57, // parent: LeftEye [54]
280.  
281.         Nose = 58, // parent: Head [51]
282.  
283.         RightEye = 59, // parent: Head [51]
284.  
285.         RightEyeLowerLid = 60, // parent: RightEye [59]
286.  
287.         RightEyeUpperLid = 61, // parent: RightEye [59]
288.  
289.         RightEyeball = 62, // parent: RightEye [59]
290.  
291.         RightShoulder1 = 63, // parent: Spine7 [18]
292.  
293.         RightArm = 64, // parent: RightShoulder1 [63]
294.  
295.         RightForearm = 65, // parent: RightArm [64]
296.  
297.         RightHand = 66, // parent: RightForearm [65]
298.  
299.         RightHandIndexStart = 67, // parent: RightHand [66]
300.  
301.         RightHandIndex1 = 68, // parent: RightHandIndexStart [67]
302.  
303.         RightHandIndex2 = 69, // parent: RightHandIndex1 [68]
304.  
305.         RightHandIndex3 = 70, // parent: RightHandIndex2 [69]
306.  
307.         RightHandIndexEnd = 71, // parent: RightHandIndex3 [70]
308.  
309.         RightHandMidStart = 72, // parent: RightHand [66]
310.  
311.         RightHandMid1 = 73, // parent: RightHandMidStart [72]
312.  
313.         RightHandMid2 = 74, // parent: RightHandMid1 [73]
314.  
315.         RightHandMid3 = 75, // parent: RightHandMid2 [74]
316.  
317.         RightHandMidEnd = 76, // parent: RightHandMid3 [75]
318.  
319.         RightHandPinkyStart = 77, // parent: RightHand [66]
320.  
321.         RightHandPinky1 = 78, // parent: RightHandPinkyStart [77]
322.  
323.         RightHandPinky2 = 79, // parent: RightHandPinky1 [78]
324.  
325.         RightHandPinky3 = 80, // parent: RightHandPinky2 [79]
326.  
327.         RightHandPinkyEnd = 81, // parent: RightHandPinky3 [80]
328.  
329.         RightHandRingStart = 82, // parent: RightHand [66]
330.  
331.         RightHandRing1 = 83, // parent: RightHandRingStart [82]
332.  
333.         RightHandRing2 = 84, // parent: RightHandRing1 [83]
334.  
335.         RightHandRing3 = 85, // parent: RightHandRing2 [84]
336.  
337.         RightHandRingEnd = 86, // parent: RightHandRing3 [85]
338.  
339.         RightHandThumbStart = 87, // parent: RightHand [66]
340.  
341.         RightHandThumb1 = 88, // parent: RightHandThumbStart [87]
342.  
343.         RightHandThumb2 = 89, // parent: RightHandThumb1 [88]
344.  
345.         RightHandThumbEnd = 90, // parent: RightHandThumb2 [89]
346.  
347.     }
348.  
349. [Subsystems] Loading plugin UnityARKit for subsystem ARKit-Input...
350.  
351. [Subsystems] UnityARKit successfully registered Provider for ARKit-Input
352.  
353. [Subsystems] UnityARKit successfully registered Provider for ARKit-Input
354.  
355. [Subsystems] UnityARKit successfully registered Provider for ARKit-Meshing
356.  
357. [Subsystems] Loading plugin UnityARKit for subsystem ARKit-Meshing...
358.  
359. New input system (experimental) initialized
360.  
361. 2022-04-05 11:38:29.090361-0500 mirror[2254:341142] Unbalanced calls to begin/end appearance transitions for <SplashScreenController: 0x131010c20>.
362.  
363. UnloadTime: 2.807792 ms
364.  
365. MARS GeoLocation is not configured to request location service permission for this project. See 'GeoLocationModule' asset.
366.  
367. UnityEngine.DebugLogHandler:Internal_Log(LogType, LogOption, String, Object)
368.  
369. UnityEngine.DebugLogHandler:LogFormat(LogType, Object, String, Object[])
370.  
371. UnityEngine.Logger:Log(LogType, Object)
372.  
373. UnityEngine.Debug:Log(Object)
374.  
375. Unity.MARS.Providers.GeoLocationModule:Unity.XRTools.ModuleLoader.IModule.LoadModule()
376.  
377. Unity.XRTools.ModuleLoader.ModuleLoaderCore:LoadModulesWithTypes(List`1)
378.  
379. Unity.XRTools.ModuleLoader.ModuleLoaderCore:LoadModules()
380.  
381. Unity.XRTools.ModuleLoader.ModuleLoaderCore:ReloadModules()
382.  
383. Unity.MARS.MARSSession:Awake()
384.  
385.  
386. [Subsystems] Subsystem ARKit-Input already instantiated, returning reference
387.  
388. [Subsystems] Subsystem ARKit-Meshing already instantiated, returning reference
389.  
390. No active UnityEngine.XR.ARSubsystems.XRFaceSubsystem is available. Please ensure that a valid loader configuration exists in the XR project settings.
391.  
392. UnityEngine.DebugLogHandler:Internal_Log(LogType, LogOption, String, Object)
393.  
394. UnityEngine.DebugLogHandler:LogFormat(LogType, Object, String, Object[])
395.  
396. UnityEngine.Logger:LogFormat(LogType, String, Object[])
397.  
398. UnityEngine.Debug:LogWarningFormat(String, Object[])
399.  
400. UnityEngine.XR.ARFoundation.SubsystemLifecycleManager`3:GetActiveSubsystemInstance()
401.  
402. UnityEngine.XR.ARFoundation.SubsystemLifecycleManager`3:EnsureSubsystemInstanceSet()
403.  
404. UnityEngine.XR.ARFoundation.SubsystemLifecycleManager`3:OnEnable()
405.  
406. UnityEngine.XR.ARFoundation.ARTrackableManager`5:OnEnable()
407.  
408. UnityEngine.GameObject:Internal_AddComponentWithType(Type)
409.  
410. UnityEngine.GameObject:AddComponent(Type)
411.  
412. UnityEngine.GameObject:AddComponent()
413.  
414. Unity.MARS.Providers.ARFoundation.ARFoundationFaceTrackingProvider:Unity.XRTools.ModuleLoader.IFunctionalityProvider.LoadProvider()
415.  
416. Unity.XRTools.ModuleLoader.FunctionalityIsland:AddProvider(Type, IFunctionalityProvider)
417.  
418. Unity.XRTools.ModuleLoader.FunctionalityIsland:prepareProviders(HashSet`1, List`1, Boolean)
419.  
420. Unity.XRTools.ModuleLoader.FunctionalityIsland:InjectFunctionality(List`1, List`1)
421.  
422. Unity.MARS.Settings.MARSSceneModule:Unity.XRTools.ModuleLoader.IModuleBehaviorCallbacks.OnBehaviorAwake()
423.  
424. Unity.XRTools.ModuleLoader.ModuleLoaderCore:OnBehaviorAwake()
425.  
426. Unity.MARS.MARSSession:Awake()
427.  
428.  
429. Configuration Descriptor 0x1fb8e52d0 (rank 2): Rotation and Orientation, Plane Tracking, Light Estimation (Ambient Intensity), Light Estimation (Ambient Color), Raycast
430.  
431. Configuration Descriptor 0x1fb8e5118 (rank 0): World Facing Camera, Rotation and Orientation, Plane Tracking, Image Tracking, Object Tracking, Environment Probes, 2D Body Tracking, People Occlusion Stencil, People Occlusion Depth, Collaboration, Auto-Focus, Light Estimation (Ambient Intensity), Light Estimation (Ambient Color), Raycast, Meshing, Mesh Classification, Environment Depth, Environment Depth Temporal Smoothing
432.  
433. Configuration Descriptor 0x1fb8e53c0 (rank 1): World Facing Camera, Rotation Only, 2D Body Tracking, People Occlusion Stencil, People Occlusion Depth, Auto-Focus, Light Estimation (Ambient Intensity), Light Estimation (Ambient Color), Environment Depth, Environment Depth Temporal Smoothing
434.  
435. Configuration Descriptor 0x1fb8e4a60 (rank 1): World Facing Camera, Rotation Only, Image Tracking, 2D Body Tracking, People Occlusion Stencil, People Occlusion Depth, Auto-Focus, Light Estimation (Ambient Intensity), Light Estimation (Ambient Color), Environment Depth, Environment Depth Temporal Smoothing
436.  
437. Configuration Descriptor 0x1fb8e61f8 (rank -1): World Facing Camera, Rotation and Orientation, Plane Tracking, Image Tracking, Environment Probes, 2D Body Tracking, 3D Body Tracking, 3D Body Scale Estimation, Auto-Focus, Light Estimation (Ambient Intensity), Light Estimation (Ambient Color), Raycast
438.  
439. UnityEngine.DebugLogHandler:Internal_Log(LogType, LogOption, String, Object)
440.  
441. UnityEngine.DebugLogHandler:LogFormat(LogType, Object, String, Object[])
442.  
443. UnityEngine.Logger:Log(LogType, Object)
444.  
445. UnityEngine.Debug:Log(Object)
446.  
447. UnityEngine.XR.ARSubsystems.XRSessionSubsystem:DetermineConfiguration(Feature)
448.  
449. UnityEngine.XR.ARSubsystems.XRSessionSubsystem:Update(XRSessionUpdateParams)
450.  
451. UnityEngine.XR.ARFoundation.ARSession:Update()
452.  
453.  
454. Using session configuration 0x1fb8e5118
455.  
456.     Requested Features: User Facing Camera, Rotation and Orientation, Auto-Focus
457.  
458.     Supported Features: Rotation and Orientation, Auto-Focus
459.  
460.     Requested features not satisfied: User Facing Camera
461.  
462. UnityEngine.DebugLogHandler:Internal_Log(LogType, LogOption, String, Object)
463.  
464. UnityEngine.DebugLogHandler:LogFormat(LogType, Object, String, Object[])
465.  
466. UnityEngine.Logger:Log(LogType, Object)
467.  
468. UnityEngine.Debug:Log(Object)
469.  
470. UnityEngine.XR.ARSubsystems.XRSessionSubsystem:DebugPrintConfigurationChange(Configuration, Feature)
471.  
472. UnityEngine.XR.ARSubsystems.XRSessionSubsystem:Update(XRSessionUpdateParams)
473.  
474. UnityEngine.XR.ARFoundation.ARSession:Update()
475.  
476.  
477. 2022-04-05 11:38:31.454304-0500 mirror[2254:341142] UnityARKit: Updating ARSession configuration with <ARWorldTrackingConfiguration: 0x282ae9e00 worldAlignment=Gravity lightEstimation=Disabled frameSemantics=None videoFormat=<ARVideoFormat: 0x283c61d60 imageResolution=(1920, 1440) framesPerSecond=(60) captureDeviceType=AVCaptureDeviceTypeBuiltInWideAngleCamera captureDevicePosition=(1)> autoFocus=Enabled environmentTexturing=None wantsHDREnvironmentTextures=Enabled planeDetection=None collaboration=Disabled userFaceTracking=Disabled sceneReconstruction=None appClipCodeTracking=Disabled>
478.  
479. -> applicationWillResignActive()
480.  
481. WARNING -> applicationDidReceiveMemoryWarning()
482.  
483. -> applicationDidBecomeActive()
484.  
485. Found 3 interfaces on host iPhone: 0) 10.93.2.11 1) 162.165.5.241 2) 192.168.100.13
486.  
487. Multi-casting "[IP] 10.93.2.11 [Port] 55000 [Flags] 2 [Guid] 171254066 [EditorId] 485543332 [Version] 1048832 [Id] iPhonePlayer(8,iPhone):56000 [Debug] 0 [PackageName] iPhonePlayer [ProjectName] mirror" to [225.0.0.222:54997]...
488.  
489. -> applicationWillResignActive()
490.  
491. -> applicationDidBecomeActive()
492.  
493. Found 3 interfaces on host iPhone: 0) 10.93.2.11 1) 162.165.5.241 2) 192.168.100.13
494.  
495. Multi-casting "[IP] 10.93.2.11 [Port] 55000 [Flags] 2 [Guid] 171254066 [EditorId] 485543332 [Version] 1048832 [Id] iPhonePlayer(8,iPhone):56000 [Debug] 0 [PackageName] iPhonePlayer [ProjectName] mirror" to [225.0.0.222:54997]...

 

Bug confirmed, but I think its AR Foundation / ARKit unity packages. I downgraded to AR Foundation package version 4.0.2 and ARKit package version 4.0.1. and everything works now: I face tracking, and I am also able to access the front facing camera. BOTH face tracking and front facing camera is NOT operational in the newest recommended package versions.
@todds_unity

 

@CiaranWills I can't find that setting, see screenshot. Am I looking at the wrong place?

But it shouldn't matter anyway, when I am using the newest recommended package versions Face Tracking and Front Facing camera do not work. When I downgrade to AR Foundation package version 4.0.2 and ARKit package version 4.0.1 everything works without changing any settings.

 

@CiaranWills Yes ARKit Face Tracking package is installed. The newest recommended version does not work but downgrading to ARKit Face Tracking package version 4.0.1 does work.