Failing in enqueuing a job to Sidekiq due to InvalidURIError

I am in process of deploying a Rails 7 (Hotwire enabled) application using App Platform. This is my first time with both, Rails 7 and App Platform. Now when I am trying to delete a resource having active storage attachment I am getting following error in the logs:

[ActiveJob] Failed enqueuing ActiveStorage::PurgeJob to Sidekiq(xx_yyy_zzzz): URI::InvalidURIError (bad URI(is not URI?): "rediss://default:XYZxyzXYZ@xx-yy-zz-aa-bb-cc.b.db.ondigitalocean.com:12345}")

(Obfuscated the URI here)

I am using a managed Redis DB as a component, and referring to it in the web service component using REDIS_URL environment variable.

I am stuck at this problem from quite a long time, any help would be appreciated.