Infinitely retrying to get user

Backend is trying to get a user and failing infinitely with following error:

[error] Could not fetch user

It’s a changeset validation issue:

errors: [fields: {"should have at most %{count} item(s)", [count: 20, validation: :length, kind: :max, type: :list]}]

Ideally, after a number of failures, akkoma should save this user with an error like twitter shows “Error retrieving user info” and an option for a user to retry retrieving the user when they encounter it in the frontend.

At least, there should be a limited number of retries until the backend should stop trying to get the user info.