如何在Visual Studio 2015中修复错误代码CS0433

我有一个在Visual Studio中编写过一些代码的朋友。但是，当我运行他的代码时（使用git获取代码后），我得到了错误代码CS0433。奇怪的是，我们团队中的另一个人可以得到完全相同的代码，并可以在他的计算机上正常运行它。这是错误的屏幕截图：

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更奇怪的是，另一个在不同分支上工作的朋友在运行代码时也遇到错误CS0433。但是我可以在计算机上正常运行它。

我尝试了几件事都无济于事。

• 重建解决方案
• 清洁溶液
• 手动删除bin和obj文件夹，然后执行清理/重建

I looked around the web for a solution. I found some people with similar problems, but theirs are in ASP.NET and not .NET. See here and here.

I have also taken a look at the documentation at MSDN on error CS0433. But I'm a beginner find MSDN's explanations very cryptic...

Is there anyone who has an idea as to what is causing this problem and/or a solution on how I can fix it?

If you need additional information feel free to write a comment. I will supply it as fast as I can.