无法发布从VS2013到VS2015迁移的Web项目

I had an Asp.Net MVC project, in VS 2013 update 4, and now I continue working on it in VS 2015. The Asp.Net version is not upgraded, i.e. I still use the stable asp.net 4 and MVC 5. The problem is: I cannot publish this project anymore. During the publish, it complains about xml files of every library I use, like EF, OWIN, ... both for Nuget libraries and normal .net framework libraries. I tried adding these xml files from other sources and the publish proceeds further, but it raises another error like this:I had an Asp.Net MVC project, in VS 2013 update