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---
title: Relay wrong annotation Error
---
# Relay wrong annotation error
## Description
This error is thrown when a field on a relay connection has a wrong type
annotation. For example, the following code will throw this error:
```python
from typing import List
import strawberry
from strawberry import relay
@strawberry.type
class MyType(relay.Node): ...
@strawberry.type
class Query:
# The annotation is not a subclass of relay.Connection
my_type_conn: List[MyType] = relay.connection()
# Missing the Connection class annotation
@relay.connection
def my_type_conn_with_resolver(self) -> List[MyType]: ...
# The connection class is not a subclass of relay.Connection
@relay.connection(List[MyType])
def my_type_conn_with_resolver2(self) -> List[MyType]: ...
```
## How to fix this error
You can fix this error by properly annotating your attribute or resolver with
`relay.Connection` type subclass.
For example:
```python
from typing import List
import strawberry
from strawberry import relay
@strawberry.type
class MyType(relay.Node): ...
def get_my_type_list() -> List[MyType]: ...
@strawberry.type
class Query:
my_type_conn: relay.Connection[MyType] = relay.connection(
resolver=get_my_type_list,
)
# Missing the Connection class annotation
@relay.connection(relay.Connection[MyType])
def my_type_conn_with_resolver(self) -> List[MyType]: ...
# The connection class is not a subclass of relay.Connection
@relay.connection(relay.Connection[MyType])
def my_type_conn_with_resolver2(self) -> List[MyType]: ...
```
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