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Server crash


Luke

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Jackrats

Server running 3.0.5424.1 on CentOS. I've noticed a few times when the server wasn't running recently. There was nothing in the logs so I just restarted and moved on. While looking closer today, I found that there are 5 crash_* files in the log directory that correspond with the failures. They all have the same contents:

Object reference not set to an instance of an object
System.NullReferenceException
  at MediaBrowser.Server.Implementations.ScheduledTasks.ChapterImagesTask+<NewItemTimerCallback>c__async0.MoveNext () [0x00000] in <filename unknown>:0 


This instance was today at 16:17 based on the timestamp of the log file. A minute prior the system had completed a library scan:

 

2014-12-02 16:16:32.0818 Info - App: Scan media library Completed after 28 minute(s) and 38 seconds
 

Yesterday's instance seems to have written a number of crash_ files prior to the server actually stopping. The server_ log file for it shows multiple entries and there are several corresponding crash_ files (with the same contents as the above crash_ file):

2014-12-01 20:41:49.4270 Error - DtoUtils: ServiceBase<TRequest>::Service Exception
	Session not found.
	System.ArgumentException
	at MediaBrowser.Api.BaseApiService.GetSession () <0x0005f>
	at MediaBrowser.Api.UserLibrary.PlaystateService.Post (MediaBrowser.Api.UserLibrary.ReportPlaybackProgress) <0x00017>
	at (wrapper dynamic-method) object.lambda_method (System.Runtime.CompilerServices.Closure,object,object) <0x000
74>
	at ServiceStack.Host.ServiceExec`1/<>c__DisplayClass6<MediaBrowser.Api.UserLibrary.PlaystateService>.<CreateExecFn>b__5 (object,object) <0x0002d>
	at ServiceStack.Host.ServiceRunner`1<MediaBrowser.Api.UserLibrary.ReportPlaybackProgress>.Execute (ServiceStack.Web.IRequest,object,MediaBrowser.Api.UserLibrary.ReportPlaybackProgress) <0x00349>
	
	
2014-12-01 20:41:49.4289 Error - HttpServer: Error processing request for /mediabrowser/Sessions/Playing/Progress?itemId=6c1dbbf450752d0e07c9dae4177b34b7&PositionTicks=38110000000&isPaused=false&canSeek=true&PlayMethod=DirectStream&QueueableMediaTypes=Video&MediaSourceId=6c1dbbf450752d0e07c9dae4177b34b7&AudioStreamIndex=1&SubtitleStreamIndex=2
	Session not found.
	ServiceStack.HttpError
	No Stack Trace Available
	
2014-12-01 20:41:49.4834 Error - Main: UnhandledException
	Object reference not set to an instance of an object
	System.NullReferenceException
	  at MediaBrowser.Server.Implementations.ScheduledTasks.ChapterImagesTask+<NewItemTimerCallback>c__async0.MoveNext () [0x00000] in <filename unknown>:0 
	
2014-12-01 20:43:44.8820 Error - Main: UnhandledException
	Object reference not set to an instance of an object
	System.NullReferenceException
	  at MediaBrowser.Server.Implementations.ScheduledTasks.ChapterImagesTask+<NewItemTimerCallback>c__async0.MoveNext () [0x00000] in <filename unknown>:0 
	
2014-12-01 20:49:42.9689 Error - Main: UnhandledException
	Object reference not set to an instance of an object
	System.NullReferenceException
	  at MediaBrowser.Server.Implementations.ScheduledTasks.ChapterImagesTask+<NewItemTimerCallback>c__async0.MoveNext () [0x00000] in <filename unknown>:0 
	
2014-12-01 21:04:44.7617 Error - DtoUtils: ServiceBase<TRequest>::Service Exception
	Session not found.
	System.ArgumentException
	at MediaBrowser.Api.BaseApiService.GetSession () <0x0005f>
	at MediaBrowser.Api.UserLibrary.PlaystateService.Post (MediaBrowser.Api.UserLibrary.ReportPlaybackProgress) <0x00017>
	at (wrapper dynamic-method) object.lambda_method (System.Runtime.CompilerServices.Closure,object,object) <0x00074>
	at ServiceStack.Host.ServiceExec`1/<>c__DisplayClass6<MediaBrowser.Api.UserLibrary.PlaystateService>.<CreateExecFn>b__5 (object,object) <0x0002d>
	at ServiceStack.Host.ServiceRunner`1<MediaBrowser.Api.UserLibrary.ReportPlaybackProgress>.Execute (ServiceStack.Web.IRequest,object,MediaBrowser.Api.UserLibrary.ReportPlaybackProgress) <0x00349>
	
	
2014-12-01 21:04:44.7617 Error - HttpServer: Error processing request for /mediabrowser/Sessions/Playing/Progress?itemId=6c1dbbf450752d0e07c9dae4177b34b7&PositionTicks=38130000000&isPaused=false&canSeek=true&PlayMethod=DirectStream&QueueableMediaTypes=Video&MediaSourceId=6c1dbbf450752d0e07c9dae4177b34b7&AudioStreamIndex=1&SubtitleStreamIndex=2
	Session not found.
	ServiceStack.HttpError
	No Stack Trace Available
	

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