Scan Media Library failed

[Stefan300381]

Hi,

I'm new to jellyfin and migrating from Kodi/Tinymediamanager.
About half of the collection was scanned into the library before it failed but I have no clue why.
I initiate several new scans but it still fails. Below you can see recent log entries (full file attached).
Jellyfin runs ins Docker on Synology DS920+

How can I further troubleshoot the issue?

Thanks in advance

[2023-03-16 06:04:35.337 +01:00] [ERR] [80] Emby.Server.Implementations.Library.LibraryManager: Cannot get image dimensions for "/config/data/metadata/People/K/Kevork Malikyan/folder.jpg"
System.IO.FileNotFoundException: File not found
File name: '/config/data/metadata/People/K/Kevork Malikyan/folder.jpg'
   at Jellyfin.Drawing.Skia.SkiaEncoder.GetImageSize(String path)
   at Emby.Drawing.ImageProcessor.GetImageDimensions(BaseItem item, ItemImageInfo info)
   at Emby.Server.Implementations.Library.LibraryManager.UpdateImagesAsync(BaseItem item, Boolean forceUpdate)
[2023-03-16 06:04:58.464 +01:00] [ERR] [46] Emby.Server.Implementations.Library.LibraryManager: Cannot get image dimensions for "/config/data/metadata/People/M/Martin Gordon/folder.jpg"
System.IO.FileNotFoundException: File not found
File name: '/config/data/metadata/People/M/Martin Gordon/folder.jpg'
   at Jellyfin.Drawing.Skia.SkiaEncoder.GetImageSize(String path)
   at Emby.Drawing.ImageProcessor.GetImageDimensions(BaseItem item, ItemImageInfo info)
   at Emby.Server.Implementations.Library.LibraryManager.UpdateImagesAsync(BaseItem item, Boolean forceUpdate)
[2023-03-16 06:04:58.467 +01:00] [ERR] [46] Emby.Server.Implementations.Library.LibraryManager: Cannot get image dimensions for "/config/data/metadata/People/S/Suzanne Roquette/folder.jpg"
System.IO.FileNotFoundException: File not found
File name: '/config/data/metadata/People/S/Suzanne Roquette/folder.jpg'
   at Jellyfin.Drawing.Skia.SkiaEncoder.GetImageSize(String path)
   at Emby.Drawing.ImageProcessor.GetImageDimensions(BaseItem item, ItemImageInfo info)
   at Emby.Server.Implementations.Library.LibraryManager.UpdateImagesAsync(BaseItem item, Boolean forceUpdate)
[2023-03-16 06:05:03.445 +01:00] [ERR] [46] Emby.Server.Implementations.ScheduledTasks.TaskManager: Error
System.NullReferenceException: Object reference not set to an instance of an object.
   at MediaBrowser.Providers.Manager.ProviderManager.SaveImage(BaseItem item, String url, ImageType type, Nullable`1 imageIndex, CancellationToken cancellationToken)
   at Emby.Server.Implementations.Library.LibraryManager.ConvertImageToLocal(BaseItem item, ItemImageInfo image, Int32 imageIndex)
   at Emby.Server.Implementations.Library.LibraryManager.UpdateImagesAsync(BaseItem item, Boolean forceUpdate)
   at Emby.Server.Implementations.Library.LibraryManager.RunMetadataSavers(BaseItem item, ItemUpdateType updateReason)
   at Emby.Server.Implementations.Library.LibraryManager.SavePeopleMetadataAsync(IEnumerable`1 people, CancellationToken cancellationToken)
   at Emby.Server.Implementations.Library.LibraryManager.UpdatePeopleAsync(BaseItem item, List`1 people, CancellationToken cancellationToken)
   at MediaBrowser.Providers.Manager.MetadataService`2.SaveItemAsync(MetadataResult`1 result, ItemUpdateType reason, CancellationToken cancellationToken)
   at MediaBrowser.Providers.Manager.MetadataService`2.RefreshMetadata(BaseItem item, MetadataRefreshOptions refreshOptions, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.BaseItem.RefreshMetadata(MetadataRefreshOptions options, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.Folder.<>c__DisplayClass68_0.<<RefreshChildMetadata>b__0>d.MoveNext()
--- End of stack trace from previous location ---
   at MediaBrowser.Providers.Manager.ProviderManager.RunMetadataRefresh(Func`1 action, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.Folder.RefreshChildMetadata(BaseItem child, MetadataRefreshOptions refreshOptions, Boolean recursive, IProgress`1 progress, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.Folder.<>c__DisplayClass70_0`1.<<RunTasks>b__1>d.MoveNext()
--- End of stack trace from previous location ---
   at MediaBrowser.Controller.Entities.Folder.RunTasks[T](Func`3 task, IList`1 children, IProgress`1 progress, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.Folder.RefreshChildMetadata(BaseItem child, MetadataRefreshOptions refreshOptions, Boolean recursive, IProgress`1 progress, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.Folder.<>c__DisplayClass70_0`1.<<RunTasks>b__1>d.MoveNext()
--- End of stack trace from previous location ---
   at MediaBrowser.Controller.Entities.Folder.RunTasks[T](Func`3 task, IList`1 children, IProgress`1 progress, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.Folder.ValidateChildrenInternal2(IProgress`1 progress, Boolean recursive, Boolean refreshChildMetadata, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.Folder.ValidateChildrenInternal(IProgress`1 progress, Boolean recursive, Boolean refreshChildMetadata, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.AggregateFolder.ValidateChildrenInternal(IProgress`1 progress, Boolean recursive, Boolean refreshChildMetadata, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
   at Emby.Server.Implementations.Library.LibraryManager.PerformLibraryValidation(IProgress`1 progress, CancellationToken cancellationToken)
   at Emby.Server.Implementations.Library.LibraryManager.ValidateMediaLibraryInternal(IProgress`1 progress, CancellationToken cancellationToken)
   at Emby.Server.Implementations.ScheduledTasks.ScheduledTaskWorker.ExecuteInternal(TaskOptions options)
[2023-03-16 06:05:03.755 +01:00] [INF] [46] Emby.Server.Implementations.ScheduledTasks.TaskManager: "Scan Media Library" Failed after 1 minute(s) and 37 seconds
[2023-03-16 06:05:03.912 +01:00] [INF] [46] Emby.Server.Implementations.ScheduledTasks.TaskManager: ExecuteQueuedTasks
[2023-03-16 06:05:05.045 +01:00] [INF] [94] Emby.Server.Implementations.IO.LibraryMonitor: Watching directory "/data/Filme"

Log.txt

[Hilko113]

I had a similar problem after removing an old library location and adding a new library location.

The new library location contained about 1000 movies but when added Jellyfin only scanned about 200 of them and then gave the same error you got.

I found that the issue came from adding 1 specific movie.
I solved it by creating a new empty library location and then moving 100 movies from the 1000 in total each time.
By doing it per 100 movies I was able to locate the movie that caused this issue.

[Stefan300381]

I removed a few nfo files previously generated by TinyMediaManager and it seemed the issue was related to these nfo files. Then again, once the issue reappeared I initiated a new scan without touching the old nfo file and the library scan progressed a bit once more. Even a debug log doesn't how more info, before the issue occurs:

[2023-03-20 15:09:55.121 +01:00] [DBG] [25] MediaBrowser.Providers.Manager.ProviderManager: Saving "/data/Filme/Joker/Joker.2019.GERMAN.DL.1080p.BluRay.x264-TSCC.mkv" to "Nfo".
[2023-03-20 15:09:55.140 +01:00] [DBG] [19] Emby.Server.Implementations.IO.LibraryMonitor: Ignoring change to "/data/Filme/Joker/Joker.2019.GERMAN.DL.1080p.BluRay.x264-TSCC.nfo"
[2023-03-20 15:09:55.140 +01:00] [DBG] [19] Emby.Server.Implementations.IO.LibraryMonitor: Ignoring change to "/data/Filme/Joker/Joker.2019.GERMAN.DL.1080p.BluRay.x264-TSCC.nfo"
[2023-03-20 15:09:55.140 +01:00] [DBG] [24] Emby.Drawing.ImageProcessor: Getting image size for item "Movie" "/data/Filme/Joker/poster.jpg"
[2023-03-20 15:09:55.166 +01:00] [DBG] [24] Emby.Drawing.ImageProcessor: Getting image size for item "Movie" "/data/Filme/Joker/clearart.png"
[2023-03-20 15:09:55.229 +01:00] [DBG] [24] Emby.Drawing.ImageProcessor: Getting image size for item "Movie" "/data/Filme/Joker/banner.jpg"
[2023-03-20 15:09:55.266 +01:00] [DBG] [24] Emby.Drawing.ImageProcessor: Getting image size for item "Movie" "/data/Filme/Joker/disc.png"
[2023-03-20 15:09:55.336 +01:00] [DBG] [24] Emby.Drawing.ImageProcessor: Getting image size for item "Movie" "/data/Filme/Joker/logo.png"
[2023-03-20 15:09:55.347 +01:00] [DBG] [24] Emby.Drawing.ImageProcessor: Getting image size for item "Movie" "/data/Filme/Joker/thumb.jpg"
[2023-03-20 15:09:55.485 +01:00] [DBG] [24] Emby.Drawing.ImageProcessor: Getting image size for item "Movie" "/data/Filme/Joker/fanart.jpg"
[2023-03-20 15:09:56.298 +01:00] [DBG] [24] MediaBrowser.Providers.Manager.ProviderManager: OnRefreshProgress "e3358844e2868120cfb4e4ff5b22cd17" 74.56803455723542
[2023-03-20 15:09:56.301 +01:00] [DBG] [10] MediaBrowser.Providers.Manager.ProviderManager: OnRefreshComplete "e3358844e2868120cfb4e4ff5b22cd17"
[2023-03-20 15:09:56.308 +01:00] [ERR] [10] MediaBrowser.Providers.Manager.ProviderManager: Error refreshing item
System.NullReferenceException: Object reference not set to an instance of an object.
   at MediaBrowser.Providers.Manager.ProviderManager.SaveImage(BaseItem item, String url, ImageType type, Nullable`1 imageIndex, CancellationToken cancellationToken)
   at Emby.Server.Implementations.Library.LibraryManager.ConvertImageToLocal(BaseItem item, ItemImageInfo image, Int32 imageIndex)
   at Emby.Server.Implementations.Library.LibraryManager.UpdateImagesAsync(BaseItem item, Boolean forceUpdate)
   at Emby.Server.Implementations.Library.LibraryManager.RunMetadataSavers(BaseItem item, ItemUpdateType updateReason)
   at Emby.Server.Implementations.Library.LibraryManager.SavePeopleMetadataAsync(IEnumerable`1 people, CancellationToken cancellationToken)
   at Emby.Server.Implementations.Library.LibraryManager.UpdatePeopleAsync(BaseItem item, List`1 people, CancellationToken cancellationToken)
   at MediaBrowser.Providers.Manager.MetadataService`2.SaveItemAsync(MetadataResult`1 result, ItemUpdateType reason, CancellationToken cancellationToken)
   at MediaBrowser.Providers.Manager.MetadataService`2.RefreshMetadata(BaseItem item, MetadataRefreshOptions refreshOptions, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.BaseItem.RefreshMetadata(MetadataRefreshOptions options, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.Folder.<>c__DisplayClass68_0.<<RefreshChildMetadata>b__0>d.MoveNext()
--- End of stack trace from previous location ---
   at MediaBrowser.Providers.Manager.ProviderManager.RunMetadataRefresh(Func`1 action, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.Folder.RefreshChildMetadata(BaseItem child, MetadataRefreshOptions refreshOptions, Boolean recursive, IProgress`1 progress, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.Folder.<>c__DisplayClass70_0`1.<<RunTasks>b__1>d.MoveNext()
--- End of stack trace from previous location ---
   at MediaBrowser.Controller.Entities.Folder.RunTasks[T](Func`3 task, IList`1 children, IProgress`1 progress, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.Folder.ValidateChildrenInternal2(IProgress`1 progress, Boolean recursive, Boolean refreshChildMetadata, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.Folder.ValidateChildrenInternal(IProgress`1 progress, Boolean recursive, Boolean refreshChildMetadata, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
   at MediaBrowser.Providers.Manager.ProviderManager.RefreshCollectionFolderChildren(MetadataRefreshOptions options, CollectionFolder collectionFolder, CancellationToken cancellationToken)
   at MediaBrowser.Providers.Manager.ProviderManager.RefreshItem(BaseItem item, MetadataRefreshOptions options, CancellationToken cancellationToken)
   at MediaBrowser.Providers.Manager.ProviderManager.StartProcessingRefreshQueue()

[guythnick]

Started getting this same error after 3/14/2023

[2023-03-29 21:47:22.147 -05:00] [ERR] Error
System.NullReferenceException: Object reference not set to an instance of an object.
   at MediaBrowser.Providers.Manager.ProviderManager.SaveImage(BaseItem item, String url, ImageType type, Nullable`1 imageIndex, CancellationToken cancellationToken)
   at Emby.Server.Implementations.Library.LibraryManager.ConvertImageToLocal(BaseItem item, ItemImageInfo image, Int32 imageIndex)
   at Emby.Server.Implementations.Library.LibraryManager.UpdateImagesAsync(BaseItem item, Boolean forceUpdate)
   at Emby.Server.Implementations.Library.LibraryManager.RunMetadataSavers(BaseItem item, ItemUpdateType updateReason)
   at Emby.Server.Implementations.Library.LibraryManager.SavePeopleMetadataAsync(IEnumerable`1 people, CancellationToken cancellationToken)
   at Emby.Server.Implementations.Library.LibraryManager.UpdatePeopleAsync(BaseItem item, List`1 people, CancellationToken cancellationToken)
   at MediaBrowser.Providers.Manager.MetadataService`2.SaveItemAsync(MetadataResult`1 result, ItemUpdateType reason, CancellationToken cancellationToken)
   at MediaBrowser.Providers.Manager.MetadataService`2.RefreshMetadata(BaseItem item, MetadataRefreshOptions refreshOptions, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.BaseItem.RefreshMetadata(MetadataRefreshOptions options, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.Folder.<>c__DisplayClass68_0.<<RefreshChildMetadata>b__0>d.MoveNext()
--- End of stack trace from previous location ---
   at MediaBrowser.Providers.Manager.ProviderManager.RunMetadataRefresh(Func`1 action, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.Folder.RefreshChildMetadata(BaseItem child, MetadataRefreshOptions refreshOptions, Boolean recursive, IProgress`1 progress, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.Folder.<>c__DisplayClass70_0`1.<<RunTasks>b__1>d.MoveNext()
--- End of stack trace from previous location ---
   at MediaBrowser.Controller.Entities.Folder.RunTasks[T](Func`3 task, IList`1 children, IProgress`1 progress, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.Folder.RefreshChildMetadata(BaseItem child, MetadataRefreshOptions refreshOptions, Boolean recursive, IProgress`1 progress, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.Folder.<>c__DisplayClass70_0`1.<<RunTasks>b__1>d.MoveNext()
--- End of stack trace from previous location ---
   at MediaBrowser.Controller.Entities.Folder.RunTasks[T](Func`3 task, IList`1 children, IProgress`1 progress, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.Folder.ValidateChildrenInternal2(IProgress`1 progress, Boolean recursive, Boolean refreshChildMetadata, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.Folder.ValidateChildrenInternal(IProgress`1 progress, Boolean recursive, Boolean refreshChildMetadata, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
   at MediaBrowser.Controller.Entities.AggregateFolder.ValidateChildrenInternal(IProgress`1 progress, Boolean recursive, Boolean refreshChildMetadata, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService, CancellationToken cancellationToken)
   at Emby.Server.Implementations.Library.LibraryManager.PerformLibraryValidation(IProgress`1 progress, CancellationToken cancellationToken)
   at Emby.Server.Implementations.Library.LibraryManager.ValidateMediaLibraryInternal(IProgress`1 progress, CancellationToken cancellationToken)
   at Emby.Server.Implementations.ScheduledTasks.ScheduledTaskWorker.ExecuteInternal(TaskOptions options)
[2023-03-29 21:47:22.152 -05:00] [INF] "Scan Media Library" Failed after 6 minute(s) and 43 seconds

[guythnick]

It turns out my issue was a bad file of some sort as well. But, it was very obtuse and took a ton of time using trial and error to find the culprit. No indication of what was wrong either. It think something should be added at least to the debug logging during a library scan so you can see what file causes the scan to fail.

[andrewhaji]

I just ran into this issue. Turns out a couple of my movies had French accents in the folder name, and that was causing the library scan to fail. Removing the accents has allowed the scan to complete successfully.

[ZhangTianrong]

I have been facing the same issue for quite a while. I know It might be some erroneous nfo files or some characters not being correctly interpreted, but locating them is a nightmare. I really wish jellyfin could print out the file it's failing on in the log, at least in the debug log.

[jkhsjdhjs]

The issue described here is actually not related to filenames. It occurs when jellyfin downloads images of movies/shows/actors etc. and the server doesn't set a content type in the response, such as for this image for example: https://image.tmdb.org/t/p/original/9U64DXfWKkCJSEpPjmpZ0Kz8t2k.jpg

jellyfin/MediaBrowser.Providers/Manager/ProviderManager.cs

Lines 178 to 187 in 2cd29d1

	if (string.IsNullOrEmpty(contentType))
	{
	if (url.IndexOf("/imagecache/", StringComparison.OrdinalIgnoreCase) != -1)
	{
	contentType = "image/png";
	}
	}
	// thetvdb will sometimes serve a rubbish 404 html page with a 200 OK code, because reasons...
	if (contentType.Equals(MediaTypeNames.Text.Html, StringComparison.OrdinalIgnoreCase))

As displayed in the code snippet above, jellyfin actually checks if the content type is null, but continues anyways if the url doens't contain imagecache. Since contentType is now null, the check on line 187 throws a NullReferenceException.

This has already been fixed on the master branch, but not incorporated in a release yet: b03f56c#diff-8f8acf750f48664b534955ef779d78781da387b994e062b47f6cb90ab12a9a8aR167-R170

[Bond-009]

Closing as this should be fixed in master

[jkhsjdhjs]

@Bond-009 Do you know if the fix will be contained in the next release? Looking at the commit date, the fix has been committed over a year ago, before 10.8.0 was even released.

[Bond-009]

If we do another point release I'll try to remember to backport this, but more realistically this will have to wait until 10.9