[Python] Why does my Celery task not start on Heroku?

I currently have a dockerized django app deployed on Heroku. I've recently added celery with redis. The app works fine on my device but when I try to deploy on Heroku everything works fine up until the Celery task should be started. However nothing happens and I don't get any error logs from Heroku. I use celery-redis and followed their setup instructions but my task still does not start when I deploy to Heroku. Here is my code:

heroku.yml:

setup:
addons:
- plan: heroku-postgresql
- plan: heroku-redis
build:
docker:
web: Dockerfile
celery: Dockerfile
release:
image: web
command:
- python manage.py collectstatic --noinput
run:
web: gunicorn mysite.wsgi
celery: celery -A mysite worker --loglevel=info



views.py:

from celery.result import AsyncResult
task = transcribe_file_task.delay(file_path, audio_language, output_file_type, 'ai_transcribe_output', session_id)


task.py:

from celery import Celery
app = Celery('transcribe')#
@app.task

def transcribe_file_task(path, audio_language, output_file_type, dest_dir, session_id):
print(str("TASK: "+session_id))

#rest of code

return output_file


celery.py:

from __future__ import absolute_import, unicode_literals
import os
from celery import Celery
from django.conf import settings

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mysite.settings")

app = Celery("mysite")

app.config_from_object("django.conf:settings", namespace="CELERY")

app.autodiscover_tasks()


I ensured that my CELERY_BROKER_URL and CELERY_RESULT_BACKEND are getting the correct REDIS_URL from environment variables by having it printing it's value before the task is to be started. So I know that's not the issue

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