Heroku: Making queries but no postgresql logs

When I run a specific script that does some database queries on Heroku, I am not getting enough information from my trace to solve my problem. ( django.db.utils.DatabaseError: current transaction is aborted, commands ignored until end of transaction

)

I would like to get more information on the problem from postgresl, I can access the logs of my local postgresql like this .

But on Heroku, the launch heroku logs -p postgres

doesn't return any information.