Cannot get information about commit count and repository size using GraphQL
I'm using the [graphql explorer](https://gitlab.com/-/graphql-explorer) to get information about repositories, but... `statistic` always returns `null`. I tried with another repositories but the result is always the same.
I would like to get this information using GraphQL itself instead of request the REST API.
```graphql
query makeRepoQuery {
project(fullPath:"gitlab-org/gitlab-ce"){
forksCount
starCount
openIssuesCount
statistics {
commitCount
repositorySize
}
}
}
```
Returns:
```json
{
"data": {
"project": {
"forksCount": 5709,
"starCount": 6143,
"openIssuesCount": 16485,
"statistics": null
}
}
}
```
issue