får webservice fejl

Hej.

hvad kan problemet være når jeg får denne fejl?

Parser Error
Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.

Parser Error Message: Could not create type 'JHAWebService'.

Source Error:


Line 1:  <%@ WebService Language="vb" CodeBehind="~/App_Code/Service.vb" Class="JHAWebService" %>



Source File: /JHAWebService/jhawebservice.asmx    Line: 1


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Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42