In Gruntfile, the task [`migration-conf`](https://github.com/adaptlearning/adapt_authoring/blob/develop/Gruntfile.js#L256) refers to `config.authSource` but it should be `config.dbAuthSource` as the [database](https://github.com/adaptlearning/adapt_authoring/blob/develop/lib/dml/mongoose/index.js#L90) use that key. Fixed in #1970
In Gruntfile, the task
migration-confrefers toconfig.authSourcebut it should beconfig.dbAuthSourceas the database use that key.Fixed in #1970