System.Web.Compilation.BuildManager.CopyPrecompiledFile 並未將物件參考設定為物件的執行個體

使用MSBUild 的 aspnet_compiler.exe 发布网站,

过程中出现错误

[NullReferenceException]: 並未將物件參考設定為物件的執行個體
    System.Web.Compilation.BuildManager.CopyPrecompiledFile(VirtualFile vfile,
 String destPhysicalPath)
    System.Web.Compilation.BuildManager.CopyStaticFilesRecursive(VirtualDirect
ory sourceVdir, String destPhysicalDir, Boolean topLevel)
    System.Web.Compilation.BuildManager.PrecompileAppInternal(VirtualPath star
tingVirtualDir, IEnumerable` excludedVirtualPaths)
    System.Web.Compilation.BuildManager.PrecompileApp(VirtualPath startingVirt
ualDir, IEnumerable` excludedVirtualPaths)
    System.Web.Compilation.BuildManager.PrecompileApp(ClientBuildManagerCallba
ck callback, IEnumerable` excludedVirtualPaths)
    System.Web.Compilation.BuildManagerHost.PrecompileApp(ClientBuildManagerCa
llback callback, List` excludedVirtualPaths)
    System.Web.Compilation.BuildManagerHost.PrecompileApp(ClientBuildManagerCa
llback callback, List` excludedVirtualPaths)
    System.Web.Compilation.ClientBuildManager.PrecompileApplication(ClientBuil
dManagerCallback callback, Boolean forceCleanBuild)
    System.Web.Compilation.ClientBuildManager.PrecompileApplication(ClientBuil
dManagerCallback callback)
    System.Web.Compilation.Precompiler.Main(String[] args)

可在网站的属性页中,取消"允许更新此编译站点"

Updateable 设置为false 
Updateable='true': Allow this precompiled site to be updatable
FixedNames='true': Use fixed nameing and single page assemblies

        <AspNetCompiler
        VirtualPath='/Web'
        PhysicalPath='C:\Jenkins\jobs\KM_ERP2\workspace\Web\'
        TargetPath='C:\Jenkins\jobs\KM_ERP2\workspace\PrecompiledWeb\Web\'
        Force='false'
        Debug='false'
        Updateable='false'
        FixedNames='false' />