Android exception upon instantiation: Object reference not set to an instance of an object.

[dibenedetto]

EDIT:

The problem was a missing shader in the Android build.

Describe the bug
In an Android smartphone and in a Unity AR application, asset loading (importer.Load(path)) goes weel but an "Object reference not set to an instance of an object" exception is thrown when instantiating it (importer.InstantiateMainSceneAsync(instantiator)).
The problem is not present in the Editor on a Windows 11 platform.

Files
Fails with both .gltf and .glb files, es. this one.

To Reproduce
Try instantiating it on a standard application.

Expected behavior
An instantiation of the asset is expected.

Screenshots
No screenshots.

Desktop (please complete the following information):

• glTFast 6.2.0
• Unity Editor 2022.3.4f1
• Render Pipeline standard
• Platform: Windows 11

additionally (if significant for the bug):

• Device: ONEPLUS A6003
• OS: Android 11

Additional context
No additional information.

[dibenedetto]

The problem was a missing shader in the Android build, namely glTF/PbrMetallicRoughness.