Uncaught exception - rdebug-ide fails to initialize superclass

[satyajitg2]

Fast Debugger (ruby-debug-ide 0.7.3, debase 0.2.4.1, file filtering is supported) listens on 127.0.0.1:1234

Uncaught exception: uninitialized constant Importer
/home/...../import_hj_au.rb:12:in <top (required)>' /home/.asdf/installs/ruby/2.6.8/bin/rdebug-ide:23:in load'
/home/.asdf/installs/ruby/2.6.8/bin/rdebug-ide:23:in `

'

import_hj_au.rb

require 'spreadsheet'
require_relative './helpers/hj_au_helper'

class HjAuImporter < Importer <<------ FAILS HERE

include GraphQLUtils
include HjAuHelper
include DbfUtils