This is probably a silly error but I cannot seem to find a satisfying solution.
When running db.create_all(), I got the following error.
        
Below worked for me. Your connection to your postgres database requires a password; thus, below is what you should write..
pg_user = "magicmike"
pg_pwd = "test123"
pg_port = "5432"
app.config["SQLALCHEMY_DATABASE_URI"] = "postgresql://{username}:{password}@localhost:{port}/foodversity_db".format(username=pg_user, password=pg_pwd, port=pg_port)