I am using Visual Studio 2015 and dotnet core and trying to develop an EF Core Code First project using Sqlite and this documentation / tut
It simply Means that
YOU ARE NOT IN CURRENT PROJECT DIRECTORY
I was facing the same issue when scaffolding existing database of MySql using this.
Command I was executing:
dotnet ef dbcontext scaffold "Server=123.1.1.1;Uid=abc;Pwd=abc;Database=myDB;Connection Timeout=20;Persist Security Info=False;Port=3306;Allow User Variables=True;Connect Timeout=120;" MySql.Data.EntityFrameworkCore -o Models
Causing the same error , then I checked current working directory inside package manager console and found incorrect.
In my case
Mean I was not in current project directory then after switching directory
cd SSGCApp
Now you are in project directory all good to run the Command.