我正在尝试使用SPMETAL生成的模型类与Sharepoint 2016，在Microsoft.Sharepoint.Linq上获取错误

After running SPMETAL.exe against my Sharepoint 2016 site, I imported the generated model to my project. I get 263 errors of the type "The type or namespace name 'Linq' does not exist in the namespace 'Microsoft.Sharepoint' (are you missing an assembly reference?).After running SPMETAL.exe against my Sharepoint