I have tried to copy spatial140 from packages folder "\packages\Microsoft.SqlServer.Types...\nativeBinaries", in Visual Studio build is a success, not found some error.
But when run the project, I got that error.
I have tried to copy spatial140 from packages folder "\packages\Microsoft.SqlServer.Types...\nativeBinaries", in Visual Studio build is a success, not found some error.
But when run the project, I got that error.

Try to Change the status of
spatial140.dlltoCopy if newandContent.