Downloading images sometimes crashes the app

[Tunous]

Error in Dank

java.lang.RuntimeException in MediaAlbumViewerActivity
Can't create handler inside thread Thread[RxCachedThreadScheduler-28,5,main] that has not called Looper.prepare()

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Stacktrace

java.lang.RuntimeException: Can't create handler inside thread Thread[RxCachedThreadScheduler-28,5,main] that has not called Looper.prepare()
	at android.os.Handler.<init>(Handler.java:205)
	at android.os.Handler.<init>(Handler.java:118)
	at me.saket.dank.notifs.MediaDownloadService.lambda$null$12$MediaDownloadService(MediaDownloadService.java:502)
	at me.saket.dank.notifs.-$$Lambda$MediaDownloadService$H-1UbqGtQJepc-ZJFswNvk5NvYI.cancel(Unknown Source:4)
	at io.reactivex.internal.disposables.CancellableDisposable.dispose(CancellableDisposable.java:49)
	at io.reactivex.internal.disposables.DisposableHelper.dispose(DisposableHelper.java:125)
	at io.reactivex.internal.operators.observable.ObservableCreate$CreateEmitter.dispose(ObservableCreate.java:122)
	at io.reactivex.internal.operators.observable.ObservableUnsubscribeOn$UnsubscribeObserver$DisposeTask.run(ObservableUnsubscribeOn.java:95)
	at io.reactivex.Scheduler$DisposeTask.run(Scheduler.java:452)
	at io.reactivex.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:66)
	at io.reactivex.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:57)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:301)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
	at java.lang.Thread.run(Thread.java:764)

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[Tunous]

Caused by Glide clear which is called when downloading images not always running from main thread.