cannot find container Django_1

[Cally99]

I've been using this project for a while and when I have made changes to docker-compose adding extra containers for celery and celery beat I've come across an error starting the django app container. with django docker-compose exec django bash`

for some reason it's not finding the container all of a sudden even though docker-compose up-d has been run?

This has happened me on a few occasions and I've had to delete all the containers with purge and start again. Has anyone encounterd this issue before?