Widgets not working in release/TestFlight builds

The widgets works perfectly fine when debug built on a simulator. But when release scheme is built on a real device, it shows blank with some placeholder view, and editing widget does not work.

Using Xcode Version 12.4 (12D4e)
Real device(SE 2) running iOS 14.4

TestFlight build also having the same issue.

Have a configurable widget with the builder configuration as follows

Code Block swift
struct SensorWidgetBuilderUIView: Widget {
 let kind: String = "SensorWidget"
  
 var body: some WidgetConfiguration {
  IntentConfiguration(kind: kind, intent: SensorWidgetIntent.self, provider: SensorProvider()) { entry in
   SensorWidgetEntryView(entry: entry)
  }
  .configurationDisplayName(LocalizedStringKey("sensor_widget"))
  .description("dummy")
  .supportedFamilies([.systemSmall])
 }
}

In the real device'c console I could see some errors:

1. Error on adding widget to homescreen

Code Block shell
Can't create SBHWidgetConfigurationInteraction because missing widgetDescriptor (<private>) or widgetIntent ((null))

2. Error after adding

Code Block shell
No intent in timeline(for:with:completion:)
[com.telldus.live.mobile.HomescreenWidget:SensorWidget] reload: failed with error The operation couldn’t be completed. (CHSErrorDomain error 1101.))

Here is my getTimeline implementation:

Code Block swift
func getTimeline(for configuration: SensorWidgetIntent, in context: Context, completion: @escaping (Timeline<Entry>) -> ()) {
  let date = Calendar.current.date(byAdding: .minute, value: SensorProvider.updateIntervalInMinutes, to: Date())!
  WidgetUtils().getSensorSimpleEntry(configuration: configuration) {sensorWidgetStructure in
   let entry = SensorSimpleEntry(date: date, sensorWidgetStructure: sensorWidgetStructure)
   let timeline = Timeline(entries: [entry], policy: .atEnd)
   completion(timeline)
  }
 }

I have tried this solution, but with no luck!

I would appreciate any help,
Thanks in advance!