Not able to download the file using Background Assets for TestFlight build

Hi, I used Background assets to download files during install/update events. The debug build works fine when I trigger the install event through terminal. The same code base (with different bundle ID ) is used in Test Flight build. But the file is not downloaded when I install the TestFlight build. I'm getting following error in Console while installing the TestFlight build.

sometimes, i'm getting Failed to notify extension about finished download: BAURLDownload (0x61a80ab98):

guard let url = URL(string:"https://devstreaming-cdn.apple.com/videos/wwdc/2021/10220/6/3866585A-3920-44B4-AB3F-03A446FCDE3A/downloads/wwdc2021-10220_hd.mp4") else{
            return Set()
        }

        
        switch (request) {
        case .install, .update:
            let essentialDownload =
            BAURLDownload(
                identifier: "avtar345",
                request: URLRequest(url: url),
                essential: true,
                fileSize: 155384552,
                applicationGroupIdentifier: appGroupIdentifier,
                priority: .default)
            downloadsToSchedule.insert(essentialDownload)
            break;
        case .periodic: break;
   }