Foreign Key Relation issue and outside of app context issue

[IbDaGib]

Hello Team,

I have an issue with me and my teammates code. Nothing seems to be working as it works for them, I run on a mac and they are on windows. The issue is either the "application is working outside of application context". I tried to fix this with conftest.py, but to no success and it started bringing up other issues. My next issue is the "sqlalchemy.exc.NoForeignKeysError: Could not determine join condition between parent/child tables on relationship User.listing - there are no foreign keys linking these tables. Ensure that referencing columns are associated with a ForeignKey or ForeignKeyConstraint, or specify a 'primaryjoin' expression." These are both stopping me from running or testing my code, and I cannot tell where to navigate my efforts as it seems like there are issues everywhere according to the terminal output. Please take a look at our page, As I cannot figure out how to solve these issues.
link to page: https://github.com/ibrahimsalma/Comptastic