Q:

To generate one for the first time: rails generate symmetric_encryption:config, how to fix warning?

When I start my Rails application I'm getting warning like this 
Symmetric Encryption config not found.
To generate one for the first time: rails generate symmetric_encryption:config

I don't know why it's showing
If I generate symmetric_encryption:config nothing happened.
What is the use of 'symmetric_encryption:config'
Where it will use? What it will do?
Anything we have to configure, and what it will encrypt?

A:

It is mean that your application using symmetric-encryption gem. Here is detail information about configuration of this gem.

