Checking for user existence by not a unique value

So, here as a part of the login process, you are checking if the user is existed by doing a search by the username which is not a unique value and there could be multiple users with the same username and this should have been done by searching by the email which is not a unique value also in your database

https://github.com/GSG-G10/W7-ToDo/blob/9732c79189a00e005547aec1357720691b619383/server/controllers/get_auth.js#L7

https://github.com/GSG-G10/W7-ToDo/blob/9732c79189a00e005547aec1357720691b619383/server/database/config/data.sql#L5-L6

Start with server/controllers/get_auth.js at the linked line, then inspect server/database/config/data.sql lines 5-6 to compare the login lookup with the available user fields and constraints. Clarify which user identifier is intended to be unique; done means the authentication lookup and database definition consistently use that identifier.

Written by the indexing model from the issue text.