error 400 instead of 404

```
curl -X PUT "http://localhost:800/api/v2/devices/MyDevice/actuators/Act1/value" -H  "accept: application/json;charset=utf-8" -H  "Content-Type: application/json;charset=utf-8" -d "444"
```
gives:
```
400
Error from Keycloak: {"error":"invalid_resource","error_description":"Resource with id [device-MyDevice] does not exist."}
```
It should be 404.