"This site says ... Error"

Hello,

I get this from the Admin panel when viewing a Product - how do I find out what the error is?

Thanks,
Dave

Anything logged in the system's log "Admin/Log/List"?

Thanks for the reply ... here's what was in the log ...
  Error
The log entry message.Short message:  Object reference not set to an instance of an object.
The details for the log entry.Full message:  System.NullReferenceException: Object reference not set to an instance of an object. at Nop.Web.Extensions.ControllerExtensions.<>c.

This is a very common error message in C#. It is thrown when you try to perform an action on an object which is not initialized. It's not possible to say exact reason from here. Try to debug if you have source code.

mhsjaber wrote:

I get this Error:

System.NullReferenceException: Object reference not set to an instance of an object.
   at NUglify.JavaScript.JSParser.ParseUnaryExpression(Boolean& isLeftHandSideExpr, Boolean isMinus)
   at NUglify.JavaScript.JSParser.ParseExpressionStatement(Boolean fSourceElement)
   at NUglify.JavaScript.JSParser.ParseStatement(Boolean fSourceElement, Boolean skipImportantComment)
   at NUglify.JavaScript.JSParser.ParseFunctionBody(BlockStatement body)
   at NUglify.JavaScript.JSParser.ParseFunction(FunctionType functionType, SourceContext fncCtx)
   at NUglify.JavaScript.JSParser.ParseLeftHandSideExpression(Boolean isMinus)
   at NUglify.JavaScript.JSParser.ParseUnaryExpression(Boolean& isLeftHandSideExpr, Boolean isMinus)
   at NUglify.JavaScript.JSParser.ParseExpressionList(JSToken terminator)
   at NUglify.JavaScript.JSParser.ParseMemberExpression(AstNode expression, List`1 newContexts)
   at NUglify.JavaScript.JSParser.ParseLeftHandSideExpression(Boolean isMinus)
   at NUglify.JavaScript.JSParser.ParseUnaryExpression(Boolean& isLeftHandSideExpr, Boolean isMinus)
   at NUglify.JavaScript.JSParser.ParseExpressionStatement(Boolean fSourceElement)
   at NUglify.JavaScript.JSParser.ParseStatement(Boolean fSourceElement, Boolean skipImportantComment)
   at NUglify.JavaScript.JSParser.ParseFunctionBody(BlockStatement body)
   at NUglify.JavaScript.JSParser.ParseFunction(FunctionType functionType, SourceContext fncCtx)
   at NUglify.JavaScript.JSParser.ParseLeftHandSideExpression(Boolean isMinus)
   at NUglify.JavaScript.JSParser.ParseUnaryExpression(Boolean& isLeftHandSideExpr, Boolean isMinus)
   at NUglify.JavaScript.JSParser.ParseExpressionList(JSToken terminator)
   at NUglify.JavaScript.JSParser.ParseMemberExpression(AstNode expression, List`1 newContexts)
   at NUglify.JavaScript.JSParser.ParseLeftHandSideExpression(Boolean isMinus)
   at NUglify.JavaScript.JSParser.ParseUnaryExpression(Boolean& isLeftHandSideExpr, Boolean isMinus)
   at NUglify.JavaScript.JSParser.ParseExpressionStatement(Boolean fSourceElement)
   at NUglify.JavaScript.JSParser.ParseStatement(Boolean fSourceElement, Boolean skipImportantComment)
   at NUglify.JavaScript.JSParser.ParseStatements(BlockStatement block)
   at NUglify.JavaScript.JSParser.InternalParse()
   at WebMarkupMin.NUglify.NUglifyJsMinifier.Minify(String content, Boolean isInlineCode, Encoding encoding)
   at WebMarkupMin.Core.GenericHtmlMinifier.ProcessEmbeddedScriptContent(MarkupParsingContext context, String content, String contentType)
   at WebMarkupMin.Core.GenericHtmlMinifier.EmbeddedCodeHandler(MarkupParsingContext context, String code)
   at WebMarkupMin.Core.Parsers.HtmlParser.ProcessEmbeddedCode()
   at WebMarkupMin.Core.Parsers.HtmlParser.Parse(String content)
   at WebMarkupMin.Core.GenericHtmlMinifier.Minify(String content, String fileContext, Encoding encoding, Boolean generateStatistics)
   at WebMarkupMin.AspNetCore2.BodyWrapperStream.Finish()
   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.ResponseCompression.ResponseCompressionMiddleware.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)

Please, help me.

Thanks!!