changesetCountsOverTime panics

Created by: felixfbecker

Run this query on latest master: GraphQL query Replace campaignID by an existing ID, or use my DB dump.

query CampaignByID($campaign: ID!) {
    node(id: $campaign) {
        __typename
        ... on Campaign {
            ...CampaignFields
        }
    }
}

fragment CampaignFields on Campaign {
    id
    namespace {
        id
        namespaceName
    }
    author {
        username
        avatarURL
    }
    name
    description
    createdAt
    updatedAt
    url
    changesets {
        nodes {
            id
            title
            body
            state
            reviewState
            repository {
                name
                url
            }
            externalURL {
                url
            }
            createdAt
        }
    }
    # TODO move to separate query and configure from/to
    changesetCountsOverTime {
        date
        merged
        closed
        openApproved
        openChangesRequested
        openPending
    }
}