what is the cause of the error

HTTP Error 500.32 - Failed to load .NET Core host
Common solutions to this issue:
The app was likely published for a different bitness than w3wp.exe/iisexpress.exe is running as.
Troubleshooting steps:
Check the system event log for error messages
Enable logging the application process' stdout messages
Attach a debugger to the application process and inspect
For more information visit: https://go.microsoft.com/fwlink/?LinkID=2028526

This is caused when the Advanced Setting Enable 32-Bit Applications is set to True.
Open Inetmgr, right click on the Application pool and choose Advanced Settings and set Enable 32-Bit Applications to False
See https://documentation.red-gate.com/sm/troubleshooting/issues-with-iis-wmi-and-asp-net/problems-with-iis-and-asp-net#:~:text=HTTP%20Error%20500.32%20%E2%80%93%20Failed%20to%20load%20.&text=This%20is%20caused%20when%20the,Applications%20is%20set%20to%20True.

32-bit permissions are enabled.
error persists

HTTP Error 500.32 - Failed to load .NET Core host
Common solutions to this issue:
The app was likely published for a different bitness than w3wp.exe/iisexpress.exe is running as.
Troubleshooting steps:
Check the system event log for error messages
Enable logging the application process' stdout messages
Attach a debugger to the application process and inspect
For more guidance on diagnosing and handling these errors, visit Troubleshoot ASP.NET Core on Azure App Service and IIS.

iska wrote:
Yes - they should not be enabled.
Disable and restart the webserver and application pool

My hosting company said 64 bit authorizations were also given, but my problem persists iskateknoloji.com

What are 64 bit authorizations ?
I assume  you disabled 32-bit permissions and restarted the webserver and application pool ?

Yes 32 bit is turned off

I have an error screen when I want to see Order details in Admin Panel and 500 error in console of browser on the page of all Orders - js try to fetch some data of Orders but it failed. After rebooting app it is gone. But the problem happen every day. There is log of nopcommerce app
info: Microsoft.EntityFrameworkCore.Database.Command[20101]
      Executed DbCommand (4ms) [Parameters=[@__get_Item_0='?' (DbType = Int32)], CommandType='Text', CommandTimeout='30']
      SELECT TOP(1) [e].[Id], [e].[AffiliateId], [e].[AllowStoringCreditCardNumber], [e].[AuthorizationTransactionCode], [e].[AuthorizationTransactionId], [e].[AuthorizationTransactionResult], [e].[BillingAddressId], [e].[CaptureTransactionId], [e].[CaptureTransactionResult], [e].[CardCvv2], [e].[CardExpirationMonth], [e].[CardExpirationYear], [e].[CardName], [e].[CardNumber], [e].[CardType], [e].[CheckoutAttributeDescription], [e].[CheckoutAttributesXml], [e].[CreatedOnUtc], [e].[CurrencyRate], [e].[CustomOrderNumber], [e].[CustomValuesXml], [e].[CustomerCurrencyCode], [e].[CustomerId], [e].[CustomerIp], [e].[CustomerLanguageId], [e].[CustomerTaxDisplayTypeId], [e].[Deleted], [e].[MaskedCreditCardNumber], [e].[OrderDiscount], [e].[OrderGuid], [e].[OrderShippingExclTax], [e].[OrderShippingInclTax], [e].[OrderStatusId], [e].[OrderSubTotalDiscountExclTax], [e].[OrderSubTotalDiscountInclTax], [e].[OrderSubtotalExclTax], [e].[OrderSubtotalInclTax], [e].[OrderTax], [e].[OrderTotal], [e].[PaidDateUtc], [e].[PaymentMethodAdditionalFeeExclTax], [e].[PaymentMethodAdditionalFeeInclTax], [e].[PaymentMethodSystemName], [e].[PaymentStatusId], [e].[PickupAddressId], [e].[PickupInStore], [e].[RefundedAmount], [e].[RewardPointsHistoryEntryId], [e].[ShippingAddressId], [e].[ShippingMethod], [e].[ShippingRateComputationMethodSystemName], [e].[ShippingStatusId], [e].[StoreId], [e].[SubscriptionTransactionId], [e].[TaxRates], [e].[VatNumber]
      FROM [Order] AS [e]
      WHERE [e].[Id] = @__get_Item_0
fail: Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware[1]
      An unhandled exception has occurred while executing the request.
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.Discounts.DiscountService.GetAllDiscountUsageHistory(Nullable`1 discountId, Nullable`1 customerId, Nullable`1 orderId, Int32 pageIndex, Int32 pageSize)
   at Nop.Web.Areas.Admin.Factories.OrderModelFactory.PrepareOrderModelTotals(OrderModel model, Order order) in C:\andrei\nopcommerce\sources\src\Presentation\Nop.Web\Areas\Admin\Factories\OrderModelFactory.cs:line 457
   at Nop.Web.Areas.Admin.Factories.OrderModelFactory.PrepareOrderModel(OrderModel model, Order order, Boolean excludeProperties) in C:\andrei\nopcommerce\sources\src\Presentation\Nop.Web\Areas\Admin\Factories\OrderModelFactory.cs:line 1072
   at Nop.Web.Areas.Admin.Controllers.OrderController.Edit(Int32 id) in C:\andrei\nopcommerce\sources\src\Presentation\Nop.Web\Areas\Admin\Controllers\OrderController.cs:line 1099
   at lambda_method(Closure , Object , Object[] )
   at Microsoft.AspNetCore.Mvc.Internal.ActionMethodExecutor.SyncActionResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeActionMethodAsync()
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeNextActionFilterAsync()
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow(ActionExecutedContext context)
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeInnerFilterAsync()
   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:\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.Services.Installation.InstallUrlMiddleware.Invoke(HttpContext context, IWebHelper webHelper) in C:\andrei\nopcommerce\sources\src\Libraries\Nop.Services\Installation\InstallUrlMiddleware.cs:line 52
   at Nop.Services.Common.KeepAliveMiddleware.Invoke(HttpContext context, IWebHelper webHelper) in C:\andrei\nopcommerce\sources\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)
   at Nop.Web.Framework.Infrastructure.Extensions.ApplicationBuilderExtensions.<>c.<UseNopExceptionHandler>b__1_1(HttpContext context) in C:\andrei\nopcommerce\sources\src\Presentation\Nop.Web.Framework\Infrastructure\Extensions\ApplicationBuilderExtensions.cs:line 89
   at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware.Invoke(HttpContext context)
info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[3]
      Route matched with {action = "Error", controller = "Error", area = ""}. Executing controller action with signature Microsoft.AspNetCore.Mvc.IActionResult Error() on controller Nop.Web.Controllers.ErrorController (Nop.Web).
info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[1]
      Executing action method Nop.Web.Controllers.ErrorController.Error (Nop.Web) - Validation state: Valid
info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[2]
      Executed action method Nop.Web.Controllers.ErrorController.Error (Nop.Web), returned result Microsoft.AspNetCore.Mvc.VirtualFileResult in 0.0064ms.
info: Microsoft.AspNetCore.Mvc.Infrastructure.VirtualFileResultExecutor[1]
      Executing Microsoft.AspNetCore.Mvc.VirtualFileResult, sending file 'errorpage.htm' with download name '' ...
info: Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker[2]
      Executed action Nop.Web.Controllers.ErrorController.Error (Nop.Web) in 1.1048ms
info: Microsoft.AspNetCore.Hosting.Internal.WebHost[2]
      Request finished in 170.0124ms 500 text/html

NopCommerce 4.20
SQL SERVER 15.0.2000
windows server 2016

Help me to understand what the problem and how to fix it