undefined method 'stellate_service_name'

[maxrosecollins]

I'm trying to get this gem running but I'm facing an error.

! Unable to load application: NoMethodError: undefined method 'stellate_service_name' for class RanktrackerApiSchema
bundler: failed to load command: puma (/Users/max/.rbenv/versions/3.4.2/bin/puma)
/Users/max/.rbenv/versions/3.4.2/lib/ruby/gems/3.4.0/gems/stellate-1.1.0/lib/stellate.rb:125:in 'Stellate::SchemaSyncing.use': undefined method 'stellate_service_name' for class RanktrackerApiSchema (NoMethodError)

      unless schema.stellate_service_name.is_a?(String)

My schema file is as follows.

# frozen_string_literal: true
require 'stellate'

class RanktrackerApiSchema < GraphQL::Schema
  mutation(Types::MutationType)
  query(Types::QueryType)

  @stellate_service_name = "xxxxx"
  @stellate_token = "xxxxxx"


  use Stellate::SchemaSyncing

  # For batch-loading (see https://graphql-ruby.org/dataloader/overview.html)
  use GraphQL::Dataloader
  use GraphQL::Pro::Defer
  use GraphQL::Pro::Stream
  
  trace_with(GraphQL::Tracing::AppsignalTrace)

  # GraphQL-Ruby calls this when something goes wrong while running a query:
  def self.type_error(err, context)
    # if err.is_a?(GraphQL::InvalidNullError)
    #   # report to your bug tracker here
    #   return nil
    # end
    super
  end

  # Union and Interface Resolution
  def self.resolve_type(abstract_type, obj, ctx)
    # TODO: Implement this method
    # to return the correct GraphQL object type for `obj`
    raise(GraphQL::RequiredImplementationMissingError)
  end

  # Limit the size of incoming queries:
  max_query_string_tokens(5000)

  # Stop validating when it encounters this many errors:
  validate_max_errors(100)

  # Relay-style Object Identification:

  # Return a string UUID for `object`
  def self.id_from_object(object, type_definition, query_ctx)
    # For example, use Rails' GlobalID library (https://github.com/rails/globalid):
    object.to_gid_param
  end

  # Given a string UUID, find the object
  def self.object_from_id(global_id, query_ctx)
    # For example, use Rails' GlobalID library (https://github.com/rails/globalid):
    GlobalID.find(global_id)
  end
end