为什么我的项目中出现 Newtonsoft.Json.JsonConvert 的 CS0433 错误？

Question

In my ASP.NET MVC project, the following error occurs:

Error CS0433 The type "JsonConvert" exists both in "Newtonsoft.Json, Version = 12.0.0.0, Culture = neutral, PublicKeyToken = 30ad4fe6b2a6aeed", and in "Newtonsoft.Json, Version = 6.0.0.0, Culture = neutral, PublicKeyToken = 30ad4fe6b2a6aeed"

I checked the entire project and did not find in it a link or any mention of Newtonsoft.Json, Version = 6.0.0.0 . I tried to remove Newtonsoft.Json, Version = 6.0.0.0 and 12.0.0.0 , then installed the latest version, but the error does not go away. Please tell me what this may be connected with. I am completely at a loss.

Answer 1

Maybe you have linked another NuGet package which requires Newtonsoft.Json 6.0.0.0. You might have a look at your dependencies for each NuGet package or try recreating the whole solution.