Crash on "Notify for new items" setting in "All feeds"

When I try to enable notify for new items in the All feeds view, Feeder crashes

08-15 12:38:00.406  5751  5806 E AndroidRuntime: FATAL EXCEPTION: IntentService[RssDatabaseService]
08-15 12:38:00.406  5751  5806 E AndroidRuntime: Process: com.nononsenseapps.feeder, PID: 5751
08-15 12:38:00.406  5751  5806 E AndroidRuntime: java.lang.IllegalArgumentException: Parameter specified as non-null is null: method kotlin.jvm.internal.Intrinsics.checkParameterIsNotNull, parameter tag
08-15 12:38:00.406  5751  5806 E AndroidRuntime: 	at com.nononsenseapps.feeder.util.ContentResolverExtensionsKt.setNotify(ContentResolverExtensions.kt)
08-15 12:38:00.406  5751  5806 E AndroidRuntime: 	at com.nononsenseapps.feeder.db.RssDatabaseService.onHandleIntent(RssDatabaseService.java:104)
08-15 12:38:00.406  5751  5806 E AndroidRuntime: 	at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:68)
08-15 12:38:00.406  5751  5806 E AndroidRuntime: 	at android.os.Handler.dispatchMessage(Handler.java:102)
08-15 12:38:00.406  5751  5806 E AndroidRuntime: 	at android.os.Looper.loop(Looper.java:154)
08-15 12:38:00.406  5751  5806 E AndroidRuntime: 	at android.os.HandlerThread.run(HandlerThread.java:61)