Issue with the Prometheus Grafana explore endpoint

With the last release of erlenmeyer and Grafana 8.3.5, the Grafana `explore` leads to errors with the request:

```
prometheus.nodejs_eventloop_lag_p99_seconds : unmarshalerDecoder error
```

It looks like the `explore` do not use the erlenmeyer `query_range` endpoint which is ok for this request. However it uses the `/query` one and is failing. 