ERROR: No worker found for queue

If you use standard Shoryuken workers by include Shoryuken::Worker, and do not use ActiveJob, a commit in version 3.2.3 stopped eager loading the entire application. In this case, you must use the -r option to require your jobs specifically while starting Shoryuken.

Example:

bundle exec shoryuken \
        -R \
        -P /var/app/containerfiles/pids/shoryuken.pid \
        -C /var/app/current/config/shoryuken.yml \
        -L /var/app/containerfiles/logs/shoryuken.log \
        -r /var/app/current/app/jobs \
        -d