# 40000: Content-Type of 'application/json' not set

Log Type: APPLICATION

Log Level: ERROR

## Description

### Possible causes

* You responded with a 200 HTTP response but did not provide a `Content-Type` header of 'application/json'

### Possible solutions

* Add `Content-Type` header of 'application/json'

### Example

```json
{
	"instruction": "accept"
}
```

with no `Content-Type` header provided.