Metadata API: description sometimes are editor states

[kulla]

What is wrong?

Metadata API returns editor state as JSON for description in some courses.

BTW: After the fix serlo/metadata-exports#214 needs to be reverted.

Steps to reproduce

1. Go to https://api.serlo.org/___graphql
2. Enter the query

query {
  metadata {
    resources(first: 1, after: "MTg1NzEK") {
      nodes
    }
  }
}

You see the following in the result

"description": "{\"plugin\":\"rows\",\"state\":[{\"plugin\":\"text\",\"state\":[{\"type\":\"p\",\"children\":[{}]}],\"id\":\"dd3a8cf3-e126-40be-a026-288053190bbc\"}],\"id\":\"c872656f-8893-4967-80ec-5c3a4f83f823\"}"

How should it behave?

Description should not be parsed editor state.

Proposed Solution

I guess this is a bug after serlo/db-migrations#338 since only courses are affected when I looked into it...