message: require type when serching for notifications in graphql
diff: @@ -68,7 +68,7 @@ const typeDefs = `
  name: String
  customer: Customer
  git_url: String
  - notifications(type: String): [Notification]
  + notifications(type: String!): [Notification]
  active_systems_deploy: String
  active_systems_promote: String
  active_systems_remove: String
  