Variable "$filter_0" is not defined by operation “Route"

[grydstedt]

When using an input object with a connection I'm getting Variable "$filter_0" is not defined by operation “Route. Do I need to define all used variables in a Route somehow?

Example:

var PackagesRelay = Relay.createContainer(PackagesBase, {
  initialVariables: {
    first: PAGE_SIZE,
    filter: {sort: 'price_lh'}
  },
  fragments: {
    viewer: () => Relay.QL`
      fragment on Viewer {
        packages(first: $first, filter: $filter) {
          ${PackageListing.getFragment('packages')}
          pageInfo {
            hasNextPage
          }
        }
      }
    `
  }
});

This connection is defined as follows:

export default {
  type: Connection,
  description: 'Generic Package Queries',
  args: {
    ...connectionArgs,
    filter: {
      type: FilterInput
    }
  },
  resolve: (parent, args, info) => resolvePackageConnection(args, info)

};

Thanks for your help.

[grydstedt]

Full query:

  "query": "query Route{viewer{id,..._0hccia}} fragment _2tm2pu7 on User{user_id,first_name,country,id} fragment _3ihrzs9 on Teacher{avg_rating,tutoring_rate,tutoring_bulk_rate,id} fragment _42dwm8y on Package{_id,title,description,image{url,id},language,max_difficulty,num_lessons,id} fragment _1f04xso on PackagesConnection{edges{node{_id,user{id,..._2tm2pu7},teacher{id,..._3ihrzs9},id,..._42dwm8y},cursor}} fragment _0hccia on Viewer{_packagesp6f3x5:packages(first:10,filter:$filter_0){totalCount,rangeBegin,rangeEnd,pageInfo{hasNextPage,hasPreviousPage},..._1f04xso},id}",
  "variables": {
    "filter_0": {
      "sort": "price_lh"
    }
  }
}

[grydstedt]

Closing. Duplicate of #203