Sneakers Gem (v 2.11.0 ) not working with rails 6.0.0

I’m trying to run rails app using command foreman s

the ProcFile contains these 2 lines :
web: bundle exec passenger start -p 8000 --max-pool-size 1
sneaker_data_publisher: WORKERS=DataPublisher bundle exec rake sneakers:run
The server starts fine. But it cannot execute the sneaker:run command.

16:18:01 sneaker_data_publisher.1 | rake aborted!
16:18:01 sneaker_data_publisher.1 | Don’t know how to build task ‘sneakers:run’ (See the list of available tasks with rake --tasks )

Any help or guidance towards the same will be much appreciated