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Mono ASP.NET exception

Has anyone else had this error running on xsp on mono ASP.NET? I think this is related to caching, but there is no mention of caching in the Web.config file, so I did not intentionally do anything.

This happens only after several days of work and correction if the server is rebooted.

Status Code: InternalServerError Server Error in '/' Application The given key was not present in the dictionary. Description: HTTP 500. Error processing request. Stack Trace: System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary. at System.Collections.Generic.Dictionary`2[System.Collections.Generic.LinkedListNode`1[System.Web.Caching.CacheItem],System.String].get_Item (System.Collections.Generic.LinkedListNode`1 key) [0x00000] in <filename unknown>:0 at System.Web.Caching.CacheItemLRU.EvictIfNecessary () [0x00000] in <filename unknown>:0 at System.Web.Caching.Cache.SetItemTimeout (System.Web.Caching.CacheItem ci, DateTime absoluteExpiration, TimeSpan slidingExpiration, System.Web.Caching.CacheItemRemovedCallback onRemoveCallback, System.Web.Caching.CacheItemUpdateCallback onUpdateCallback, System.String key, Boolean doLock) [0x00000] in <filename unknown>:0 at System.Web.Caching.Cache.Insert (System.String key, System.Object value, System.Web.Caching.CacheDependency dependencies, DateTime absoluteExpiration, TimeSpan slidingExpiration, CacheItemPriority priority, System.Web.Caching.CacheItemRemovedCallback onRemoveCallback, System.Web.Caching.CacheItemUpdateCallback onUpdateCallback, Boolean doLock) [0x00000] in <filename unknown>:0 at System.Web.Caching.Cache.Insert (System.String key, System.Object value, System.Web.Caching.CacheDependency dependencies, DateTime absoluteExpiration, TimeSpan slidingExpiration, CacheItemPriority priority, System.Web.Caching.CacheItemRemovedCallback onRemoveCallback) [0x00000] in <filename unknown>:0 at System.Web.SessionState.SessionInProcHandler.InsertSessionItem (System.Web.SessionState.InProcSessionItem item, Int32 timeout, System.String id) [0x00000] in <filename unknown>:0 at System.Web.SessionState.SessionInProcHandler.SetAndReleaseItemExclusive (System.Web.HttpContext context, System.String id, System.Web.SessionState.SessionStateStoreData item, System.Object lockId, Boolean newItem) [0x00000] in <filename unknown>:0 Version information: Mono Runtime Version: 2.10.8.1 (Debian 2.10.8.1-1ubuntu2.2); ASP.NET Version: 4.0.30319.1

Here is the web.config project file:

  <?xml version="1.0"?> <!-- The settings that can be used in this file are documented at http://www.mono-project.com/Config_system.web and http://msdn2.microsoft.com/en-us/library/b5ysx397.aspx --> <configuration> <configSections> <sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"> <sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"> <section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication" /> </sectionGroup> </sectionGroup> </configSections> <system.web> <!-- Set compilation debug="true" to insert debugging symbols into the compiled page. Because this affects performance, set this value to true only during development. --> <compilation defaultLanguage="C#" debug="false"> <assemblies> <add assembly="System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" /> <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" /> <add assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" /> <add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" /> <add assembly="System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" /> <add assembly="System.Web.DynamicData, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" /> <add assembly="System.ComponentModel.DataAnnotations, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" /> <add assembly="System.Xml.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" /> </assemblies> </compilation> <customErrors mode="Off"> </customErrors> <pages> <controls> <add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> <add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> </controls> <namespaces> <add namespace="System.Web.Mvc" /> <add namespace="System.Web.Mvc.Ajax" /> <add namespace="System.Web.Mvc.Html" /> <add namespace="System.Web.Routing" /> <add namespace="System.Linq" /> <add namespace="System.Collections.Generic" /> </namespaces> </pages> <authorization> <allow users="*" /> </authorization> <httpHandlers> <remove verb="*" path="*.asmx" /> <add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> <add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> <add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false" /> <add verb="*" path="*.mvc" validate="false" type="System.Web.Mvc.MvcHttpHandler, System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> </httpHandlers> <httpModules> <add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> <add name="UrlRoutingModule" type="System.Web.Routing.UrlRoutingModule, System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> </httpModules> <trace enabled="false" localOnly="true" pageOutput="false" requestLimit="10" traceMode="SortByTime" /> <globalization requestEncoding="utf-8" responseEncoding="utf-8" /> </system.web> <system.codedom> <compilers> <compiler language="c#;cs;csharp" extension=".cs" warningLevel="4" type="Microsoft.CSharp.CSharpCodeProvider, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"> <providerOption name="CompilerVersion" value="v4.0" /> <providerOption name="WarnAsError" value="false" /> </compiler> <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" warningLevel="4" type="Microsoft.VisualBasic.VBCodeProvider, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"> <providerOption name="CompilerVersion" value="v4.0" /> <providerOption name="OptionInfer" value="true" /> <providerOption name="WarnAsError" value="false" /> </compiler> </compilers> </system.codedom> <system.web.extensions /> </configuration>

Here is a controller that has an exception:

 public class APIController : Controller { public string Index() { return "Hello"; } }
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You can try disabling the cache, as discussed here .

At the very least, this will show if the problem is really related to this.

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Source: https://habr.com/ru/post/1446479/

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