Fatal error on load SCNScene(named: "art.scnassets/NINA-B112.obj") ?

[esutton]

This works fine on the released version of "u-blox BLE" in the iOS app store.

I can find no file named "art.scnassets/NINA-B112.obj" in resources?

Steps to Reproduce

1. Start Scan
2. Select HeartRateServer ( A QT

2020-05-21 16:47:45.095868-0500 U-blox[10013:2030208] 
Fatal error: Unexpectedly found nil while unwrapping an Optional value: 
file Ublox/ViewControllers/OverviewViewController.swift, line 255

iOS-u-blox-BLE/U-blox/ViewControllers/OverviewViewController.swift

Line 254 in 8d28b21

let scene = SCNScene(named: "art.scnassets/NINA-B112.obj")!

struct OverviewModel {
    unowned var model: SCNNode
    var sceneWithLights: SCNScene
    var accelerometer = Accelerometer()
    var lastGyroscopeMeasurementTime: UInt32 = 0

    init() {
        let scene = SCNScene(named: "art.scnassets/NINA-B112.obj")!

Is there a file missing from repo?

I would dearly love to use this app to learn how to communicate with my u-blox

• https://www.u-blox.com/en/product/evk-emmy-w1

Any tips or suggestions?

[esutton]

Switching to dev branch got past this exception.

git checkout remotes/origin/development

The master seems to handle dark themes better.

However, I will switch to light for now. :-)

[iAmita]

i am also getting Fatal error: Unexpectedly found nil while unwrapping an Optional value:
file Ublox/ViewControllers/OverviewViewController.swift, line 255 .
Seems there is a missing .obj file in project. Please share a fix for it.
any help will be appreciated~