Mixedreality-webrtc: Unity UnityPlayer_UAP_arm_debug_il2cpp.pdb not loaded exception on build deploy HL2

[efsjouw]

Describe the bug
Probably not an issue of this specific package but I just keep getting this message when following the instructions building and then trying to deploy my project for ARM on HL2.

Never had this with any other projects?

I already changed some build settings around and tried to build again but it still gives the same exception on deployment.

Docs: https://microsoft.github.io/MixedReality-WebRTC/manual/unity/helloworld-unity-localvideo.html
Project files: https://we.tl/t-FlxiLStvm1

EDIT - Someone mentioned this might be because of my tools (sdk etc.) but I have used another PC to build/deploy and it also has this message so I guess it's still somehow because of the project?

To Reproduce
Steps to reproduce the behavior:

1. Import Unity WebRTC packages
2. Follow Unity setup instructions to setup local camera renderer
3. Build for HoloLens with ARM on min platform version 10.0.10240.0

Expected behavior
The project deploys.

Environment

• MR-WebRTC version 2.0.0
• Platform: UWP, Unity WSA Player (UWP)
• Architecture: ARM
• Unity version 2019.4.1f1
• Target device: HoloLens 2

Additional context
UnityPlayer_UAP_arm_debug_il2cpp.pdb not loaded

[fibann]

According to https://forum.unity.com/threads/unityplayer_uap_x86_release_il2cpp-pdb-not-loaded.482960/ this should mean that Unity can't find its own pdb file, and should be benign. Are you sure that this is what is making the deployment fail? Are you deploying from Unity or from Visual Studio?

The link to your project has expired so I can't try it, though this indeed seems an issue with how Unity/VS are setup rather than with the project.

[qian256]

I encountered the same issue. Turning off Graphics Jobs in Player Settings / Other Settings as mentioned in #466 solved my issue. Not sure whether it is repeatable.

[efsjouw]

It appears something is crashing in Unity's job system
https://forum.unity.com/threads/unityplayer_uap_arm_debug_il2cpp-pdb-not-loaded-exception-hololens-2-webrtc.957854/#post-6273128

[djee-ms]

@efsjouw did you try @qian256's suggestion to disable Graphics Jobs? This is a known bug/regression in Unity, not sure this is exactly what's causing that but I know for a fact this won't work on HoloLens 2, and Unity was working on fixing it last I checked.