Sidekiq job random failures due to proxy_config is nil

[ajinkyapisal]

ar-octopus 0.9.2
sidekiq 5.0.5
rails 4.2.10

Octopus Shard Config

octopus:
  replicated: true
  fully_replicated: false
  environments:
    - development
    - test
    - production

We have noticed this few times in our production environment. Sometimes sidekiq jobs fail randomly due to octopus proxy config issue.

"error_message":"Octopus::Proxy#shards delegated to proxy_config.shards, but proxy_config is nil: #<Octopus::Proxy:0x46d931b>",
"error_class":"Module::DelegationError"

We have not been able to reproduce this issue in development. We need help in understanding why would proxy_config be nil. We can then try to fix those scenarios. Let us know if any other information is required.