During the download process, disconnect the network and restore the network, causing the application crash.

D/Surface ( 3963): Surface::setBuffersDimensions(this=0x7f8861fc00,w=1080,h=1920)
I/flutter ( 3963): ConnectivityResult.wifi
D/AndroidRuntime( 3963): Shutting down VM
D/SQLiteDatabase( 3963): beginTransaction()
D/SQLiteDatabase( 3963): endTransaction()
D/SQLiteDatabase( 3963): beginTransaction()
D/SQLiteDatabase( 3963): endTransaction()
D/SQLiteDatabase( 3963): beginTransaction()
D/SQLiteDatabase( 3963): beginTransaction()
D/SQLiteDatabase( 3963): endTransaction()
D/SQLiteDatabase( 3963): beginTransaction()
D/SQLiteDatabase( 3963): endTransaction()
D/SQLiteDatabase( 3963): endTransaction()
D/SQLiteDatabase( 3963): beginTransaction()
D/SQLiteDatabase( 3963): endTransaction()
E/AndroidRuntime( 3963): FATAL EXCEPTION: main
E/AndroidRuntime( 3963): Process: com.nufront.euhtbss, PID: 3963
E/AndroidRuntime( 3963): java.lang.RuntimeException: Error receiving broadcast Intent { act=android.net.conn.CONNECTIVITY_CHANGE flg=0x4000010 (has extras) } in androidx.work.impl.constraints.trackers.NetworkStateTracker$NetworkStateBroadcastReceiver@1ed5879c
E/AndroidRuntime( 3963): at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:965)
E/AndroidRuntime( 3963): at android.os.Handler.handleCallback(Handler.java:815)
E/AndroidRuntime( 3963): at android.os.Handler.dispatchMessage(Handler.java:104)
E/AndroidRuntime( 3963): at android.os.Looper.loop(Looper.java:194)
E/AndroidRuntime( 3963): at android.app.ActivityThread.main(ActivityThread.java:5889)
E/AndroidRuntime( 3963): at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime( 3963): at java.lang.reflect.Method.invoke(Method.java:372)
E/AndroidRuntime( 3963): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1019)
E/AndroidRuntime( 3963): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:814)
E/AndroidRuntime( 3963): Caused by: java.util.concurrent.RejectedExecutionException: Task java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask@18a97487 rejected from java.util.concurrent.ScheduledThreadPoolExecutor@911efb4[Terminated, pool size = 0, active threads = 0, queued tasks = 0, completed tasks = 0]
E/AndroidRuntime( 3963): at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2011)
E/AndroidRuntime( 3963): at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:793)
E/AndroidRuntime( 3963): at java.util.concurrent.ScheduledThreadPoolExecutor.delayedExecute(ScheduledThreadPoolExecutor.java:298)
E/AndroidRuntime( 3963): at java.util.concurrent.ScheduledThreadPoolExecutor.schedule(ScheduledThreadPoolExecutor.java:503)
E/AndroidRuntime( 3963): at java.util.concurrent.Executors$DelegatedScheduledExecutorService.schedule(Executors.java:644)
E/AndroidRuntime( 3963): at androidx.work.impl.background.systemalarm.WorkTimer.startTimer(WorkTimer.java:82)
E/AndroidRuntime( 3963): at androidx.work.impl.background.systemalarm.DelayMetCommandHandler.onAllConstraintsMet(DelayMetCommandHandler.java:100)
E/AndroidRuntime( 3963): at androidx.work.impl.constraints.WorkConstraintsTracker.onConstraintMet(WorkConstraintsTracker.java:150)
E/AndroidRuntime( 3963): at androidx.work.impl.constraints.controllers.ConstraintController.updateCallback(ConstraintController.java:134)
E/AndroidRuntime( 3963): at androidx.work.impl.constraints.controllers.ConstraintController.onConstraintChanged(ConstraintController.java:141)
E/AndroidRuntime( 3963): at androidx.work.impl.constraints.trackers.ConstraintTracker.setState(ConstraintTracker.java:103)
E/AndroidRuntime( 3963): at androidx.work.impl.constraints.trackers.NetworkStateTracker$NetworkStateBroadcastReceiver.onReceive(NetworkStateTracker.java:170)
E/AndroidRuntime( 3963): at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:953)
E/AndroidRuntime( 3963): ... 8 more