Newpipe: Deleted Channels Throw An Error When Refreshing Subscription Feed

Created on 30 Mar 2020 · 8Comments · Source: TeamNewPipe/NewPipe

Using the latest version. If the user imports a subscription list with a deleted chaneel such as

results in a null pointer exception as a snack-bar error.

Exception

__User Action:__ requested feed
__Request:__ Loading feed
__Content Language:__ US
__Service:__ none
__Version:__ 0.19.0
__OS:__ Linux Android 10 - 29

Crash log

org.schabi.newpipe.local.feed.service.FeedLoadService$RequestException: 0:https://www.youtube.com/channel/UCcNE9TRcOCOoOB0Dy5ediPg
    at org.schabi.newpipe.local.feed.service.FeedLoadService$startLoading$7.apply(FeedLoadService.kt:220)
    at org.schabi.newpipe.local.feed.service.FeedLoadService$startLoading$7.apply(FeedLoadService.kt:63)
    at io.reactivex.internal.operators.parallel.ParallelMap$ParallelMapSubscriber.onNext(ParallelMap.java:113)
    at io.reactivex.internal.operators.parallel.ParallelFilter$ParallelFilterSubscriber.tryOnNext(ParallelFilter.java:130)
    at io.reactivex.internal.operators.parallel.ParallelRunOn$RunOnConditionalSubscriber.run(ParallelRunOn.java:397)
    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:923)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String org.jsoup.nodes.Element.text()' on a null object reference
    at org.schabi.newpipe.extractor.services.youtube.extractors.YoutubeFeedExtractor.getId(YoutubeFeedExtractor.java:53)
    at org.schabi.newpipe.extractor.feed.FeedInfo.getInfo(FeedInfo.java:39)
    at org.schabi.newpipe.util.ExtractorHelper.lambda$getFeedInfoFallbackToChannelInfo$6(ExtractorHelper.java:149)
    at org.schabi.newpipe.util.-$$Lambda$ExtractorHelper$ugdV6CfeDCyyO_ocIIpHyBlriuE.call(Unknown Source:4)
    at io.reactivex.internal.operators.maybe.MaybeFromCallable.subscribeActual(MaybeFromCallable.java:46)
    at io.reactivex.Maybe.subscribe(Maybe.java:4154)
    at io.reactivex.internal.operators.maybe.MaybeSwitchIfEmptySingle.subscribeActual(MaybeSwitchIfEmptySingle.java:45)
    at io.reactivex.Single.subscribe(Single.java:3438)
    at io.reactivex.Single.blockingGet(Single.java:2699)
    at org.schabi.newpipe.local.feed.service.FeedLoadService$startLoading$7.apply(FeedLoadService.kt:210)
    ... 11 more

bug feed requires extractor change

Source

PeterHindes

Most helpful comment

Expected behavior is to notify the user and ask them to delete the channel from their subscriptions.

PeterHindes on 30 Mar 2020

👍5

All 8 comments

Expected behavior is to notify the user and ask them to delete the channel from their subscriptions.

PeterHindes on 30 Mar 2020

👍5

Page In Question

PeterHindes on 30 Mar 2020

@mauriciocolli Have a look.

opusforlife2 on 15 Aug 2020

I have the same problem. I have 2 or 3 nonexistent channels without any easy way to remove them.

Mhowser on 17 Sep 2020

@Mhowser you can long press on channels you want to unsubscribe from in the subscription tab

Stypox on 17 Sep 2020

I know that, it gives no clear indication if the channel is deleted on YouTube. I would need to manually check all 200+ channels that I have.

https://github.com/TeamNewPipe/NewPipe/issues/3313#issuecomment-606268478 this is a preferred solution. Another solution would be displaying a warning sign next to the deleted channel in the channel list.

Mhowser on 17 Sep 2020

Another solution would be displaying a warning sign next to the deleted channel in the channel list.

I was about to suggest this. Feed refresh is the only time when the app queries all the channels for new videos one by one. That is the optimal way to alert the user about deleted channels.

opusforlife2 on 18 Sep 2020

I don't think it's easily possible to add a banned channel to NewPipe in order to test this issue. If anyone would like to reproduce this issue, I've attached a NewPipe configuration zip that contains two banned channels that should trigger this error.
NewPipeData-TwoBannedChannels-20201113_142545.zip