AR object is completely black

[Shubi-khanduri]

I am rendering .glb file in my app. I am getting .glb file from the local storage of mobile objects color is completely black IDK what is happening. but when I am getting the same file from asset in Android studio it is working perfectly fine all the colour of object are showing perfectly even if I am getting the year object from URL it is working fine here is but I am doing please help me with this.
@ThomasGorisse, or someone else, do you know, how can I fix that? Is it possible?
sceneView = findViewById<ARSceneView?>(R.id.
sceneView
).
apply
{
lifecycle = [email protected]
planeRenderer.isEnabled = true
configureSession { session, config ->
config.
depthMode
= when (session.isDepthModeSupported(Config.DepthMode.
AUTOMATIC
)) {
true -> Config.DepthMode.
AUTOMATIC

else -> Config.DepthMode.
DISABLED

}
config.
instantPlacementMode
= Config.InstantPlacementMode.
DISABLED

config.
lightEstimationMode
= Config.LightEstimationMode.
ENVIRONMENTAL_HDR

}
onSessionUpdated = { _, frame ->
if (anchorNode == null) {
frame.
getUpdatedPlanes
()
.
firstOrNull
{ it.
type
== Plane.Type.
HORIZONTAL_UPWARD_FACING
}
?.
let
{ plane ->
addAnchorNode(plane.createAnchor(plane.
centerPose
))
}
}
}
onTrackingFailureChanged = { reason ->
[email protected] = reason
}
}

fun addAnchorNode(anchor: Anchor, uri: Uri) {
    if (selectedFile == null) {
        Log.e("ARActivity", "Failed to copy file")
        return
    }
    Log.e("FileCheck", "File loading...")
    sceneView.addChildNode(
        AnchorNode(sceneView.engine, anchor)
            .apply {
                isEditable = true
                lifecycleScope.launch {
                    isLoading = true
                    buildModelNode1(selectedFile)?.let { addChildNode(it) }

// buildModelNode()?.let { addChildNode(it) }
isLoading = false
}
anchorNode = this
}
)
}

fun addAnchorNode(anchor: Anchor) {

    sceneView.addChildNode(
        AnchorNode(sceneView.engine, anchor)
            .

apply
{
isEditable = true

lifecycleScope
.
launch
{
isLoading = true
buildModelNode()?.
let
{ addChildNode(it) }
// buildViewNode()?.let { addChildNode(it) }
isLoading = false
}
anchorNode = this
}
)
}

fun buildModelNode1(file: File?): ModelNode? {
// val file = File(cacheDir, "DamagedHelmet.glb")
if (file == null) {
Log.e("FileCheck", "File does not exist: ")
return null
}
Log.d("FileCheck", "File exists: ${file.
absolutePath
}")
sceneView.modelLoader.createModelInstance(file = file).
let
{ model ->
return ModelNode(
modelInstance = model,
// Scale to fit in a 0.5 meters cube
scaleToUnits = 0.5f,
// Bottom origin instead of center so the model base is on floor
// centerOrigin = Position(y = -0.5f)
centerOrigin = Position(x = 0.0f, y = -1.0f, z = 0.0f)
).
apply
{
isEditable = true
}
}
}