Critical: Client's app stopped working after Quest 2 update v57

We have bunch of apps built with same tools and they work fine after the recent update, but for some reason one app stopped working and I can't figure out why. It's one of the more simple apps we've done and doesn't (to my recollection) have anything too different from the others.
The app just crashes before it even goes to the almost empty initialisation scene.

I checked the MQDH logs to see what is wrong and it seems to point to a shader not compiling, but it doesn't tell which shader. How can I know what shader is the problematic one? We only have couple simple custom shaders.

What I've tried:
-I've updated the Oculus Integration package(that we don't really use, but still).
-I updated all unity packages used in the project and removed few unnecessary ones.
-I tried deleting our custom shaders - build still crashed... which makes sense since we have those same shaders in all of our projects and the others still work.
-I deleted and recreated AndroidManifest from Oculus tools.
-I checked Oculus Project Setup Tool - it didn't have any problems.
-I converted all project materials to URP.
-I checked that Unity shaders were all compiling in the editor - they were.

What should I try next? Probably something with shaders, but I have no idea what. 
I've attached below the logs from one test run.
The main problem (afaik) is around here:
21:32:05.008 7386 12697 W ShaderProgram : Compiling shader: ****** failed ******
https://drive.google.com/file/d/1yJlOr0YxE8QXCwFMpJKM6tiwMAtlKV_T/view?usp=sharing

Our project specs are:
-Unity 2021.3.24f1, latest URP
-Target Quest 2 & Quest Pro
-Vulkan Multiview, all  vulkan optimisations in use including late latching, except Application SpaceWarp
-Inputs via XR Input
-Ask if you need more info on something.