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---
title: Missing arguments annotation Error
---
# Missing arguments annotation Error
## Description
This error is thrown when an argument is missing an annotation, for example the
following code will throw this error:
```python
import strawberry
@strawberry.type
class Query:
@strawberry.field
def hello(self, name) -> str: # <-- note name here is missing an annotation
return f"hello {name}"
schema = strawberry.Schema(query=Query)
```
This happens because Strawberry needs to know the type of every argument to be
able to generate the correct GraphQL type.
## How to fix this error
You can fix this error by adding an annotation to the argument, for example, the
following code will fix this error:
```python
import strawberry
@strawberry.type
class Query:
@strawberry.field
def hello(self, name: str) -> str:
return f"hello {name}"
schema = strawberry.Schema(query=Query)
```
|
