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---
title: Missing return annotation Error
---
# Missing return annotation Error
## Description
This error is thrown when a resolver and it's corresponding field don't have a
return annotation, for example the following code will throw this error:
```python
import strawberry
@strawberry.type
class Query:
@strawberry.field
def example(self):
return "this is an example"
schema = strawberry.Schema(query=Query)
```
This happens because Strawberry needs to know the return type of the resolver to
be able to generate the correct GraphQL type.
## How to fix this error
You can fix this error by adding a return annotation to the resolver, for
example, the following code will fix this error:
```python
import strawberry
@strawberry.type
class Query:
@strawberry.field
def example(self) -> str:
return "this is an example"
schema = strawberry.Schema(query=Query)
```
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