Project file is incomplete. Expected imports are missing 错误解决方案

当你打开一个.net core的项目，Visual Studio 可能无法打开，提示如下错误：D:\workshop\Github\Ocelot\src\Ocelot\Ocelot.csproj : error : Project file is incomplete. Expected imports are missing.D:\workshop\Github\Ocelot\test\Oce...