# #<Course::Link:0x00007fd28dc44c00 id: 1, link: "http://ortiz.com/cher_mohr", course_id: 1, created_at: Thu, 07 Dec 2023 11:05:13.779644000 UTC +00:00, updated_at: Thu, 07 Dec 2023 11:05:13.779644000 UTC +00:00, position: 1>
```

## Secret key base
:::warning
[`Avo::Services::EncryptionService`](https://github.com/avo-hq/avo/blob/main/lib/avo/services/encryption_service.rb) fetches a secret key base to be used on the encrypt / decrypt process. Make sure that you have it defined in any of the following:

`ENV["SECRET_KEY_BASE"] || Rails.application.credentials.secret_key_base || Rails.application.secrets.secret_key_base`
:::

---