Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.

Hi, I get the error below after adding the Traction Theme and loading the plugins for the theme into the necessary directories.

[ReflectionTypeLoadException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.]
   System.Reflection.RuntimeModule.GetTypes(RuntimeModule module) +0
   System.Reflection.RuntimeModule.GetTypes() +9
   System.Reflection.Assembly.GetTypes() +70
   Nop.Core.Plugins.PluginManager.Initialize() +1450

[Exception: Plugin 'Seven Spikes Core'. Could not load file or assembly 'Autofac, Version=4.4.0.0, Culture=neutral, PublicKeyToken=17863af14b0044da' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
]
   Nop.Core.Plugins.PluginManager.Initialize() +1915

[Exception: Plugin 'Seven Spikes Core'. Could not load file or assembly 'Autofac, Version=4.4.0.0, Culture=neutral, PublicKeyToken=17863af14b0044da' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
]
   Nop.Core.Plugins.PluginManager.Initialize() +2471

[InvalidOperationException: The pre-application start initialization method Initialize on type Nop.Core.Plugins.PluginManager threw an exception with the following error message: Plugin 'Seven Spikes Core'. Could not load file or assembly 'Autofac, Version=4.4.0.0, Culture=neutral, PublicKeyToken=17863af14b0044da' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
.]
   System.Web.Compilation.BuildManager.InvokePreStartInitMethodsCore(ICollection`1 methods, Func`1 setHostingEnvironmentCultures) +613
   System.Web.Compilation.BuildManager.InvokePreStartInitMethods(ICollection`1 methods) +141
   System.Web.Compilation.BuildManager.CallPreStartInitMethods(String preStartInitListPath, Boolean& isRefAssemblyLoaded) +102
   System.Web.Compilation.BuildManager.ExecutePreAppStart() +157
   System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException) +531

[HttpException (0x80004005): The pre-application start initialization method Initialize on type Nop.Core.Plugins.PluginManager threw an exception with the following error message: Plugin 'Seven Spikes Core'. Could not load file or assembly 'Autofac, Version=4.4.0.0, Culture=neutral, PublicKeyToken=17863af14b0044da' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
.]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +9946132
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +90
   System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +261

Hello,

Sorry for the late reply!

Do you have any custom modifications? Most probably you have changed the Autofac version.

We are using the nopCommerce packages in our plugins.