issue: Cannot return null for non-nullable field Item.effect.

[notaphplover]

Where are you having the issue

• GraphQL
• JSON API

Is the issue affecting one of the two elements below ?

• Translations
• Definitions Files (Open API, GraphQL Schema, etc)

Description

When calling the API, a server error is thrown when Item.effect is null.

Just send the following query:

{
  set(id: "dp3") @locale(lang: "en") {
    id,
    name,
    cards {
      abilities { effect, name, type },
      attacks { cost, damage, effect },
      category,
      effect,
      energyType,
      evolveFrom,
      hp,
      id,
      image,
      item { effect, name },
      legal { expanded, standard },
      level,
      name,
      rarity,
      regulationMark,
      resistances { type, value },
      retreat,
      stage,
      suffix,
      trainerType,
      types,
      variants { firstEdition, holo, normal, reverse, wPromo },
      weaknesses { type, value }
    }
  }
}

Expected behavior

API serves a set.

Current behavior

API fails with the folowing payload:

{
  "errors": [
    {
      "message": "Cannot return null for non-nullable field Item.effect.",
      "locations": [
        {
          "line": 20,
          "column": 14
        }
      ],
      "path": [
        "set",
        "cards",
        82,
        "item",
        "effect"
      ]
    }
  ]
}

Context

https://www.apollographql.com/blog/using-nullability-in-graphql#what-happens-if-you-try-to-return-null-for-a-non-null-field