Laravel Queue Worker on Amazon EC2 setup issue

I have deployed a Laravel project on EC2 instance. I am using the database queue driver to process my queued jobs. I have followed the guide below to configure supervisor: https://gist.github.com/vrajroham/6565c4b2e9b4db693c1524394545a610

However when I try to run laravel worker with the command

/usr/local/bin/supervisorctl start laravel-worker:*

I get the following response:

laravel-worker: ERROR (no such group)

via Chebli Mohamed