I have an intermittent error that appears in my code. When I debug it using Visual Studio, with a break for all exceptions (caught and not displayed), it will not break, so I'm not sure what to do.
It looks like a session state provider from the stack trace, here is the configuration:
<sessionState mode="Custom" customProvider="RedisSessionProvider"> <providers> <add name="RedisSessionProvider" type="Microsoft.Web.Redis.RedisSessionStateProvider" port="6380" host="2asdasdasdasd.redis.cache.windows.net" accessKey="2asdasdasdasd=" ssl="true" /> </providers> </sessionState>
I installed StackExchange.Redis from NuGet, I am running 1.0.297. I cannot reproduce this regularly, I have tried various browsers and operating systems, and it just happens “sometimes”.
Here is the stack trace:
Object reference not set to an instance of an object.Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.NullReferenceException: Object reference not set to an instance of an object. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [NullReferenceException: Object reference not set to an instance of an object.] Microsoft.Web.Redis.StackExchangeClientConnection.Eval(String script, String[] keyArgs, Object[] valueArgs) +246 Microsoft.Web.Redis.RedisConnectionWrapper.Set(ISessionStateItemCollection data, Int32 sessionTimeout) +60 Microsoft.Web.Redis.RedisSessionStateProvider.SetAndReleaseItemExclusive(HttpContext context, String id, SessionStateStoreData item, Object lockId, Boolean newItem) +802 System.Web.SessionState.SessionStateModule.OnReleaseState(Object source, EventArgs eventArgs) +565 System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +136 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +69
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