Clicking a product

Hi, Every time I am clicking a product it is giving me the following error. Can anyone help me please ?

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:


Line 544:                    {
Line 545:                        decimal taxRate = decimal.Zero;
Line 546:                        decimal oldPriceBase = _taxService.GetProductPrice(productVariant, productVariant.OldPrice, out taxRate);
Line 547:                        decimal finalPriceWithoutDiscountBase = _taxService.GetProductPrice(productVariant, _priceCalculationService.GetFinalPrice(productVariant, false), out taxRate);
Line 548:                        decimal finalPriceWithDiscountBase = _taxService.GetProductPrice(productVariant, _priceCalculationService.GetFinalPrice(productVariant, true), out taxRate);


Source File: C:\Users\ashequr.R.DOMAIN.000\Downloads\nopCommerce_2.30_Source\Presentation\Nop.Web\Controllers\CatalogController.cs    Line: 546

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   Nop.Services.Tax.TaxService.GetTaxRate(ProductVariant productVariant, Int32 taxCategoryId, Customer customer) in C:\Users\ashequr.R.DOMAIN.000\Downloads\nopCommerce_2.30_Source\Libraries\Nop.Services\Tax\TaxService.cs:243
   Nop.Services.Tax.TaxService.GetProductPrice(ProductVariant productVariant, Int32 taxCategoryId, Decimal price, Boolean includingTax, Customer customer, Boolean priceIncludesTax, Decimal& taxRate) in C:\Users\ashequr.R.DOMAIN.000\Downloads\nopCommerce_2.30_Source\Libraries\Nop.Services\Tax\TaxService.cs:323
   Nop.Services.Tax.TaxService.GetProductPrice(ProductVariant productVariant, Decimal price, Boolean includingTax, Customer customer, Decimal& taxRate) in C:\Users\ashequr.R.DOMAIN.000\Downloads\nopCommerce_2.30_Source\Libraries\Nop.Services\Tax\TaxService.cs:304
   Nop.Services.Tax.TaxService.GetProductPrice(ProductVariant productVariant, Decimal price, Customer customer, Decimal& taxRate) in C:\Users\ashequr.R.DOMAIN.000\Downloads\nopCommerce_2.30_Source\Libraries\Nop.Services\Tax\TaxService.cs:287
   Nop.Services.Tax.TaxService.GetProductPrice(ProductVariant productVariant, Decimal price, Decimal& taxRate) in C:\Users\ashequr.R.DOMAIN.000\Downloads\nopCommerce_2.30_Source\Libraries\Nop.Services\Tax\TaxService.cs:263
   Nop.Web.Controllers.CatalogController.PrepareProductVariantModel(ProductVariantModel model, ProductVariant productVariant) in C:\Users\ashequr.R.DOMAIN.000\Downloads\nopCommerce_2.30_Source\Presentation\Nop.Web\Controllers\CatalogController.cs:546
   Nop.Web.Controllers.CatalogController.PrepareProductDetailsPageModel(Product product) in C:\Users\ashequr.R.DOMAIN.000\Downloads\nopCommerce_2.30_Source\Presentation\Nop.Web\Controllers\CatalogController.cs:442
   Nop.Web.Controllers.CatalogController.Product(Int32 productId) in C:\Users\ashequr.R.DOMAIN.000\Downloads\nopCommerce_2.30_Source\Presentation\Nop.Web\Controllers\CatalogController.cs:1172
   lambda_method(Closure , ControllerBase , Object[] ) +101
   System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +17
   System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +208
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +27
   System.Web.Mvc.<>c__DisplayClass15.<InvokeActionMethodWithFilters>b__12() +55
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +263
   System.Web.Mvc.<>c__DisplayClass17.<InvokeActionMethodWithFilters>b__14() +19
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +263
   System.Web.Mvc.<>c__DisplayClass17.<InvokeActionMethodWithFilters>b__14() +19
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +263
   System.Web.Mvc.<>c__DisplayClass17.<InvokeActionMethodWithFilters>b__14() +19
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +263
   System.Web.Mvc.<>c__DisplayClass17.<InvokeActionMethodWithFilters>b__14() +19
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +263
   System.Web.Mvc.<>c__DisplayClass17.<InvokeActionMethodWithFilters>b__14() +19
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +191
   System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +343
   System.Web.Mvc.Controller.ExecuteCore() +116
   System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +97
   System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +10
   System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +37
   System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +21
   System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +12
   System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
   System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +50
   System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(Action f) +7
   System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +22
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +60
   System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8966925
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184

https://www.nopcommerce.com/boards/t/14288/cannot-get-plugins-working-on-new-install.aspx

BTW, what hosting and FTP client are you using?

iis 7.5 and nopcommerce 2.3 and sql server database

But what hosting and FTP client are you using?