Index was outside the bounds of the array.

Any help with this error would be appreciated...
Just trying to get to the bottom of this


System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at System.Collections.Generic.List`1.Enumerator.MoveNext()
   at Microsoft.EntityFrameworkCore.Query.Expressions.SelectExpression.VisitChildren(ExpressionVisitor visitor)
   at Microsoft.EntityFrameworkCore.SqlServer.Query.Sql.Internal.SqlServerQuerySqlGenerator.RowNumberPagingExpressionVisitor.VisitSelectExpression(SelectExpression selectExpression)
   at Microsoft.EntityFrameworkCore.SqlServer.Query.Sql.Internal.SqlServerQuerySqlGeneratorFactory.CreateDefault(SelectExpression selectExpression)
   at Microsoft.EntityFrameworkCore.Query.Internal.ShaperCommandContext.GetRelationalCommand(IReadOnlyDictionary`2 parameters)
   at Microsoft.EntityFrameworkCore.Query.Internal.QueryingEnumerable`1.Enumerator.BufferlessMoveNext(DbContext _, Boolean buffer)
   at Microsoft.EntityFrameworkCore.SqlServer.Storage.Internal.SqlServerExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)
   at Microsoft.EntityFrameworkCore.Query.Internal.QueryingEnumerable`1.Enumerator.MoveNext()
   at Microsoft.EntityFrameworkCore.Query.Internal.LinqOperatorProvider._TrackEntities[TOut,TIn](IEnumerable`1 results, QueryContext queryContext, IList`1 entityTrackingInfos, IList`1 entityAccessors)+MoveNext()
   at Microsoft.EntityFrameworkCore.Query.Internal.LinqOperatorProvider.ExceptionInterceptor`1.EnumeratorExceptionInterceptor.MoveNext()
   at System.Collections.Generic.List`1.AddEnumerable(IEnumerable`1 enumerable)
   at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
   at Nop.Services.Catalog.ManufacturerService.GetAllManufacturers(String manufacturerName, Int32 storeId, Int32 pageIndex, Int32 pageSize, Boolean showHidden)
   at SevenSpikes.Nop.Plugins.MegaMenu.Components.MegaMenuManufacturerViewComponent.PrepareManufacturersModel(MenuItemModel menuItem, Boolean& shouldShowViewAllLink)
   at SevenSpikes.Nop.Plugins.MegaMenu.Components.MegaMenuManufacturerViewComponent.<>c__DisplayClass19_0.<Invoke>b__2()
   at EasyCaching.InMemory.DefaultInMemoryCachingProvider.BaseGet[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.Core.EasyCachingAbstractProvider.Get[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.InMemory.DefaultInMemoryCachingProvider.BaseGet[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.Core.EasyCachingAbstractProvider.Get[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.InMemory.DefaultInMemoryCachingProvider.BaseGet[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.Core.EasyCachingAbstractProvider.Get[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.InMemory.DefaultInMemoryCachingProvider.BaseGet[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.Core.EasyCachingAbstractProvider.Get[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.InMemory.DefaultInMemoryCachingProvider.BaseGet[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.Core.EasyCachingAbstractProvider.Get[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.InMemory.DefaultInMemoryCachingProvider.BaseGet[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.Core.EasyCachingAbstractProvider.Get[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.InMemory.DefaultInMemoryCachingProvider.BaseGet[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.Core.EasyCachingAbstractProvider.Get[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.InMemory.DefaultInMemoryCachingProvider.BaseGet[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.Core.EasyCachingAbstractProvider.Get[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.InMemory.DefaultInMemoryCachingProvider.BaseGet[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.Core.EasyCachingAbstractProvider.Get[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.InMemory.DefaultInMemoryCachingProvider.BaseGet[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.Core.EasyCachingAbstractProvider.Get[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.InMemory.DefaultInMemoryCachingProvider.BaseGet[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.Core.EasyCachingAbstractProvider.Get[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.InMemory.DefaultInMemoryCachingProvider.BaseGet[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at EasyCaching.Core.EasyCachingAbstractProvider.Get[T](String cacheKey, Func`1 dataRetriever, TimeSpan expiration)
   at Nop.Core.Caching.MemoryCacheManager.Get[T](String key, Func`1 acquire, Nullable`1 cacheTime) in C:\Files\projects\portlandcompressor\src\Libraries\Nop.Core\Caching\MemoryCacheManager.cs:line 42
   at SevenSpikes.Nop.Plugins.MegaMenu.Components.MegaMenuManufacturerViewComponent.Invoke(MenuItemModel menuItem)
   at lambda_method(Closure , Object , Object[] )
   at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentInvoker.InvokeSyncCore(ObjectMethodExecutor executor, ViewComponentContext context)
   at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentInvoker.InvokeAsync(ViewComponentContext context)
   at StackExchange.Profiling.Internal.ProfilingViewComponentInvoker.InvokeAsync(ViewComponentContext context) in C:\projects\dotnet\src\MiniProfiler.AspNetCore.Mvc\Internal\ProfilingViewComponentInvoker.cs:line 30
   at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentHelper.InvokeCoreAsync(ViewComponentDescriptor descriptor, Object arguments)
   at AspNetCore.Plugins_SevenSpikes_Nop_Plugins_MegaMenu_Views_Components_MegaMenu_MegaMenu.ExecuteAsync() in C:\inetpub\portlandcompressor.com\Plugins\SevenSpikes.Nop.Plugins.MegaMenu\Views\Components\MegaMenu\MegaMenu.cshtml:line 58
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageCoreAsync(IRazorPage page, ViewContext context)
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageAsync(IRazorPage page, ViewContext context, Boolean invokeViewStarts)
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderAsync(ViewContext context)
   at Microsoft.AspNetCore.Mvc.ViewComponents.ViewViewComponentResult.ExecuteAsync(ViewComponentContext context)
   at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentInvoker.InvokeAsync(ViewComponentContext context)
   at StackExchange.Profiling.Internal.ProfilingViewComponentInvoker.InvokeAsync(ViewComponentContext context) in C:\projects\dotnet\src\MiniProfiler.AspNetCore.Mvc\Internal\ProfilingViewComponentInvoker.cs:line 30
   at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentHelper.InvokeCoreAsync(ViewComponentDescriptor descriptor, Object arguments)
   at AspNetCore.Themes_Wind_Views_Shared_Components_Widget_Default.ExecuteAsync() in C:\inetpub\portlandcompressor.com\Themes\Wind\Views\Shared\Components\Widget\Default.cshtml:line 4
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageCoreAsync(IRazorPage page, ViewContext context)
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageAsync(IRazorPage page, ViewContext context, Boolean invokeViewStarts)
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderAsync(ViewContext context)
   at Microsoft.AspNetCore.Mvc.ViewComponents.ViewViewComponentResult.ExecuteAsync(ViewComponentContext context)
   at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentInvoker.InvokeAsync(ViewComponentContext context)
   at StackExchange.Profiling.Internal.ProfilingViewComponentInvoker.InvokeAsync(ViewComponentContext context) in C:\projects\dotnet\src\MiniProfiler.AspNetCore.Mvc\Internal\ProfilingViewComponentInvoker.cs:line 30
   at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentHelper.InvokeCoreAsync(ViewComponentDescriptor descriptor, Object arguments)
   at AspNetCore.Themes_Wind_Views_Shared__Header.ExecuteAsync() in C:\inetpub\portlandcompressor.com\Themes\Wind\Views\Shared\_Header.cshtml:line 82
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageCoreAsync(IRazorPage page, ViewContext context)
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageAsync(IRazorPage page, ViewContext context, Boolean invokeViewStarts)
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderAsync(ViewContext context)
   at Microsoft.AspNetCore.Mvc.ViewFeatures.HtmlHelper.RenderPartialCoreAsync(String partialViewName, Object model, ViewDataDictionary viewData, TextWriter writer)
   at Microsoft.AspNetCore.Mvc.ViewFeatures.HtmlHelper.PartialAsync(String partialViewName, Object model, ViewDataDictionary viewData)
   at AspNetCore.Themes_Wind_Views_Shared__Root.ExecuteAsync() in C:\inetpub\portlandcompressor.com\Themes\Wind\Views\Shared\_Root.cshtml:line 10
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageCoreAsync(IRazorPage page, ViewContext context)
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageAsync(IRazorPage page, ViewContext context, Boolean invokeViewStarts)
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderLayoutAsync(ViewContext context, ViewBufferTextWriter bodyWriter)
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderAsync(ViewContext context)
   at Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor.ExecuteAsync(ViewContext viewContext, String contentType, Nullable`1 statusCode)
   at Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor.ExecuteAsync(ActionContext actionContext, IView view, ViewDataDictionary viewData, ITempDataDictionary tempData, String contentType, Nullable`1 statusCode)
   at Microsoft.AspNetCore.Mvc.ViewFeatures.ViewResultExecutor.ExecuteAsync(ActionContext context, ViewResult result)
   at Microsoft.AspNetCore.Mvc.ViewResult.ExecuteResultAsync(ActionContext context)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeResultAsync(IActionResult result)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextResultFilterAsync[TFilter,TFilterAsync]()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ResultExecutedContext context)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.ResultNext[TFilter,TFilterAsync](State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeResultFilters()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextResourceFilter()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ResourceExecutedContext context)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeFilterPipelineAsync()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeAsync()
   at Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke(HttpContext httpContext)
   at WebMarkupMin.AspNetCore2.WebMarkupMinMiddleware.Invoke(HttpContext context)
   at StackExchange.Profiling.MiniProfilerMiddleware.Invoke(HttpContext context) in C:\projects\dotnet\src\MiniProfiler.AspNetCore\MiniProfilerMiddleware.cs:line 94
   at Nop.Services.Authentication.AuthenticationMiddleware.Invoke(HttpContext context) in C:\Files\projects\portlandcompressor\src\Libraries\Nop.Services\Authentication\AuthenticationMiddleware.cs:line 79
   at FoxNetSoft.Plugin.Misc.RedirectManager.Infrastructure.PageManagerMiddleware.Invoke(HttpContext context, IWebHelper webHelper, IWorkContext workContext, IStoreContext storeContext, RedirectManagerSettings redirectManagerSettings)
   at Microsoft.AspNetCore.Diagnostics.StatusCodePagesMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Localization.RequestLocalizationMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Session.SessionMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Session.SessionMiddleware.Invoke(HttpContext context)
   at Nop.Services.Installation.InstallUrlMiddleware.Invoke(HttpContext context, IWebHelper webHelper) in C:\Files\projects\portlandcompressor\src\Libraries\Nop.Services\Installation\InstallUrlMiddleware.cs:line 52
   at Nop.Services.Common.KeepAliveMiddleware.Invoke(HttpContext context, IWebHelper webHelper) in C:\Files\projects\portlandcompressor\src\Libraries\Nop.Services\Common\KeepAliveMiddleware.cs:line 49
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.StatusCodePagesMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.StatusCodePagesMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware.Invoke(HttpContext context)

You may need to contact the plugin developer: ....SevenSpikes.Nop.Plugins.MegaMenu

Maybe there is a Page Size in their configuration page.

Thank you, i've submitted a support ticket with them

jhausotter wrote:

Hi,

I was wondering if you found out what caused this issue? I'm having a similar problem and I can't for the life of me find out what's going on... :/

I am having same issue as well.  Nopcommerce Version 4.10
Happens on category pages.

Short message  :
Index was outside the bounds of the array.

Full message:  
System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at System.Collections.Generic.List`1.Enumerator.MoveNext()
   at Microsoft.EntityFrameworkCore.Query.Expressions.SelectExpression.VisitChildren(ExpressionVisitor visitor)
   at Microsoft.EntityFrameworkCore.SqlServer.Query.Sql.Internal.SqlServerQuerySqlGenerator.RowNumberPagingExpressionVisitor.VisitSelectExpression(SelectExpression selectExpression)
   at Microsoft.EntityFrameworkCore.SqlServer.Query.Sql.Internal.SqlServerQuerySqlGeneratorFactory.CreateDefault(SelectExpression selectExpression)
   at Microsoft.EntityFrameworkCore.Query.Internal.ShaperCommandContext.GetRelationalCommand(IReadOnlyDictionary`2 parameters)
   at Microsoft.EntityFrameworkCore.Query.Internal.QueryingEnumerable`1.Enumerator.BufferlessMoveNext(DbContext _, Boolean buffer)
   at Microsoft.EntityFrameworkCore.SqlServer.Storage.Internal.SqlServerExecutionStrategy.Execute[TState,TResult](TState state, Func`3 operation, Func`3 verifySucceeded)
   at Microsoft.EntityFrameworkCore.Query.Internal.QueryingEnumerable`1.Enumerator.MoveNext()
   at Microsoft.EntityFrameworkCore.Query.Internal.LinqOperatorProvider._TrackEntities[TOut,TIn](IEnumerable`1 results, QueryContext queryContext, IList`1 entityTrackingInfos, IList`1 entityAccessors)+MoveNext()
   at Microsoft.EntityFrameworkCore.Query.Internal.LinqOperatorProvider.ExceptionInterceptor`1.EnumeratorExceptionInterceptor.MoveNext()
   at System.Collections.Generic.List`1.AddEnumerable(IEnumerable`1 enumerable)
   at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
   at Nop.Services.Polls.PollService.GetPolls(Int32 storeId, Int32 languageId, Boolean showHidden, Boolean loadShownOnHomePageOnly, String systemKeyword, Int32 pageIndex, Int32 pageSize)
   at Nop.Web.Factories.PollModelFactory.<>c__DisplayClass6_0.<PreparePollModelBySystemName>b__0() in C:\andrei\nopcommerce\sources\src\Presentation\Nop.Web\Factories\PollModelFactory.cs:line 93
   at Nop.Core.Caching.MemoryCacheManager.Get[T](String key, Func`1 acquire, Nullable`1 cacheTime) in C:\andrei\nopcommerce\sources\src\Libraries\Nop.Core\Caching\MemoryCacheManager.cs:line 152
   at Nop.Web.Factories.PollModelFactory.PreparePollModelBySystemName(String systemKeyword) in C:\andrei\nopcommerce\sources\src\Presentation\Nop.Web\Factories\PollModelFactory.cs:line 91
   at Nop.Web.Components.PollBlockViewComponent.Invoke(String systemKeyword) in C:\andrei\nopcommerce\sources\src\Presentation\Nop.Web\Components\PollBlock.cs:line 22
   at lambda_method(Closure , Object , Object[] )
   at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentInvoker.InvokeSyncCore(ObjectMethodExecutor executor, ViewComponentContext context)
   at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentInvoker.InvokeAsync(ViewComponentContext context)
   at StackExchange.Profiling.Internal.ProfilingViewComponentInvoker.InvokeAsync(ViewComponentContext context) in C:\projects\dotnet\src\MiniProfiler.AspNetCore.Mvc\Internal\ProfilingViewComponentInvoker.cs:line 30
   at Microsoft.AspNetCore.Mvc.ViewComponents.DefaultViewComponentHelper.InvokeCoreAsync(ViewComponentDescriptor descriptor, Object arguments)
   at AspNetCore.Themes_Motion_Views_Shared__ColumnsTwo.ExecuteAsync() in D:\SLS\Themes\Motion\Views\Shared\_ColumnsTwo.cshtml:line 57
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageCoreAsync(IRazorPage page, ViewContext context)
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderPageAsync(IRazorPage page, ViewContext context, Boolean invokeViewStarts)
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderLayoutAsync(ViewContext context, ViewBufferTextWriter bodyWriter)
   at Microsoft.AspNetCore.Mvc.Razor.RazorView.RenderAsync(ViewContext context)
   at Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor.ExecuteAsync(ViewContext viewContext, String contentType, Nullable`1 statusCode)
   at Microsoft.AspNetCore.Mvc.ViewFeatures.ViewExecutor.ExecuteAsync(ActionContext actionContext, IView view, ViewDataDictionary viewData, ITempDataDictionary tempData, String contentType, Nullable`1 statusCode)
   at Microsoft.AspNetCore.Mvc.ViewFeatures.ViewResultExecutor.ExecuteAsync(ActionContext context, ViewResult result)
   at Microsoft.AspNetCore.Mvc.ViewResult.ExecuteResultAsync(ActionContext context)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeResultAsync(IActionResult result)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextResultFilterAsync[TFilter,TFilterAsync]()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ResultExecutedContext context)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.ResultNext[TFilter,TFilterAsync](State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeResultFilters()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextResourceFilter()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ResourceExecutedContext context)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeFilterPipelineAsync()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeAsync()
   at Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke(HttpContext httpContext)
   at StackExchange.Profiling.MiniProfilerMiddleware.Invoke(HttpContext context) in C:\projects\dotnet\src\MiniProfiler.AspNetCore\MiniProfilerMiddleware.cs:line 94
   at Nop.Services.Authentication.AuthenticationMiddleware.Invoke(HttpContext context) in C:\andrei\nopcommerce\sources\src\Libraries\Nop.Services\Authentication\AuthenticationMiddleware.cs:line 79
   at Microsoft.AspNetCore.Localization.RequestLocalizationMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Session.SessionMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Session.SessionMiddleware.Invoke(HttpContext context)
   at Nop.Core.Http.InstallUrlMiddleware.Invoke(HttpContext context, IWebHelper webHelper) in C:\andrei\nopcommerce\sources\src\Libraries\Nop.Core\Http\InstallUrlMiddleware.cs:line 51
   at Nop.Core.Http.KeepAliveMiddleware.Invoke(HttpContext context, IWebHelper webHelper) in C:\andrei\nopcommerce\sources\src\Libraries\Nop.Core\Http\KeepAliveMiddleware.cs:line 50
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.StatusCodePagesMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.StatusCodePagesMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware.Invoke(HttpContext context)

This is a common exception in .Net. It means that you're trying to access an item of collection by index using an invalid index.

For example.

var arr = new int[10];
var item = arr[100]; //here any index greater than 9 will throw this exception.