Remove the following code from Web. config
<system.codedom> <compilers> <compiler Language="C#;cs;csharp" Extension=". cs" Type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, version=1.0.0.0, Culture=neutral, publickeytoken= 31bf3856ad364e35 " WarningLevel="4" compileroptions="/langversion:6/nowarn:1659;1699;1701"/> <compiler Language= "vb;vbs;visualbasic;vbscript" = "vb" type= "Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, version=1.0.0.0, Culture=neutral, publickeytoken= 31bf3856ad364e35 " warninglevel=" 4 " compileroptions= "/langversion:14/nowarn :41008/define:_mytype=\" web\" /optioninfer+ "/> </compilers>< span class= "tag" ></SYSTEM.CODEDOM>
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