Invalid Strawberry Field Annotation Error

Description

This error is raised when strawberry.field() is nested inside another type in a class-field annotation. For example, this attempts to configure a list item, which is not a GraphQL field:

from typing import Annotated

import strawberry


@strawberry.type
class Query:
    names: list[Annotated[str, strawberry.field(description="A name")]]

Strawberry only uses strawberry.field() metadata from the outermost Annotated type because that node represents the class field.

How to fix this error

Move strawberry.field() to the outermost Annotated metadata for the field:

from typing import Annotated

import strawberry


@strawberry.type
class Query:
    names: Annotated[list[str], strawberry.field(description="The names")]