uninitialized constant Spree::Tracker (NameError)

[vinaymehta]

Hello, I'm trying the multi-store function. I followed the steps in the installation instruction, but I got an error when running the generation: bundle exec rails g spree_multi_domain:install

ruby: 2.4.1p111
rails: 5.2.3
spree: 3.7.2

the error:

/Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/bootsnap-1.4.3/lib/bootsnap/load_path_cache/core_ext/active_support.rb:79:in block in load_missing_constant': uninitialized constant Spree::Tracker (NameError) from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/bootsnap-1.4.3/lib/bootsnap/load_path_cache/core_ext/active_support.rb:8:in without_bootsnap_cache'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/bootsnap-1.4.3/lib/bootsnap/load_path_cache/core_ext/active_support.rb:79:in rescue in load_missing_constant' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/bootsnap-1.4.3/lib/bootsnap/load_path_cache/core_ext/active_support.rb:59:in load_missing_constant'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/bundler/gems/spree-multi-domain-efdfcf68df3e/app/models/spree/tracker_decorator.rb:1:in <main>' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/bootsnap-1.4.3/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:54:in load'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/bootsnap-1.4.3/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:54:in load' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/bundler/gems/spree-multi-domain-efdfcf68df3e/lib/spree_multi_domain/engine.rb:10:in block (2 levels) in activate'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/bundler/gems/spree-multi-domain-efdfcf68df3e/lib/spree_multi_domain/engine.rb:9:in glob' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/bundler/gems/spree-multi-domain-efdfcf68df3e/lib/spree_multi_domain/engine.rb:9:in block in activate'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/bundler/gems/spree-multi-domain-efdfcf68df3e/lib/spree_multi_domain/engine.rb:8:in each' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/bundler/gems/spree-multi-domain-efdfcf68df3e/lib/spree_multi_domain/engine.rb:8:in activate'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/activesupport-5.2.3/lib/active_support/callbacks.rb:426:in instance_exec' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/activesupport-5.2.3/lib/active_support/callbacks.rb:426:in block in make_lambda'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/activesupport-5.2.3/lib/active_support/callbacks.rb:198:in block (2 levels) in halting' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/activesupport-5.2.3/lib/active_support/callbacks.rb:606:in block (2 levels) in default_terminator'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/activesupport-5.2.3/lib/active_support/callbacks.rb:605:in catch' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/activesupport-5.2.3/lib/active_support/callbacks.rb:605:in block in default_terminator'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/activesupport-5.2.3/lib/active_support/callbacks.rb:199:in block in halting' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/activesupport-5.2.3/lib/active_support/callbacks.rb:513:in block in invoke_before'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/activesupport-5.2.3/lib/active_support/callbacks.rb:513:in each' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/activesupport-5.2.3/lib/active_support/callbacks.rb:513:in invoke_before'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/activesupport-5.2.3/lib/active_support/callbacks.rb:131:in run_callbacks' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/activesupport-5.2.3/lib/active_support/reloader.rb:89:in prepare!'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/railties-5.2.3/lib/rails/application/finisher.rb:63:in block in <module:Finisher>' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/railties-5.2.3/lib/rails/initializable.rb:32:in instance_exec'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/railties-5.2.3/lib/rails/initializable.rb:32:in run' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/railties-5.2.3/lib/rails/initializable.rb:61:in block in run_initializers'
from /Users/vinaymehta/.rvm/rubies/ruby-2.4.1/lib/ruby/2.4.0/tsort.rb:228:in block in tsort_each' from /Users/vinaymehta/.rvm/rubies/ruby-2.4.1/lib/ruby/2.4.0/tsort.rb:350:in block (2 levels) in each_strongly_connected_component'
from /Users/vinaymehta/.rvm/rubies/ruby-2.4.1/lib/ruby/2.4.0/tsort.rb:431:in each_strongly_connected_component_from' from /Users/vinaymehta/.rvm/rubies/ruby-2.4.1/lib/ruby/2.4.0/tsort.rb:349:in block in each_strongly_connected_component'
from /Users/vinaymehta/.rvm/rubies/ruby-2.4.1/lib/ruby/2.4.0/tsort.rb:347:in each' from /Users/vinaymehta/.rvm/rubies/ruby-2.4.1/lib/ruby/2.4.0/tsort.rb:347:in call'
from /Users/vinaymehta/.rvm/rubies/ruby-2.4.1/lib/ruby/2.4.0/tsort.rb:347:in each_strongly_connected_component' from /Users/vinaymehta/.rvm/rubies/ruby-2.4.1/lib/ruby/2.4.0/tsort.rb:226:in tsort_each'
from /Users/vinaymehta/.rvm/rubies/ruby-2.4.1/lib/ruby/2.4.0/tsort.rb:205:in tsort_each' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/railties-5.2.3/lib/rails/initializable.rb:60:in run_initializers'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/railties-5.2.3/lib/rails/application.rb:361:in initialize!' from /Users/vinaymehta/projects/khushbu_projects/sellist_app/spree_test2/config/environment.rb:5:in

'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/bootsnap-1.4.3/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in require' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/bootsnap-1.4.3/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in block in require_with_bootsnap_lfi'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/bootsnap-1.4.3/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in register' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/bootsnap-1.4.3/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in require_with_bootsnap_lfi'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/bootsnap-1.4.3/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in require' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/polyglot-0.3.5/lib/polyglot.rb:65:in require'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/spring-2.0.2/lib/spring/application.rb:102:in preload' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/spring-2.0.2/lib/spring/application.rb:153:in serve'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/spring-2.0.2/lib/spring/application.rb:141:in block in run' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/spring-2.0.2/lib/spring/application.rb:135:in loop'
from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/spring-2.0.2/lib/spring/application.rb:135:in run' from /Users/vinaymehta/.rvm/gems/ruby-2.4.1/gems/spring-2.0.2/lib/spring/application/boot.rb:19:in <top (required)>'
from /Users/vinaymehta/.rvm/rubies/ruby-2.4.1/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in require' from /Users/vinaymehta/.rvm/rubies/ruby-2.4.1/lib/ruby/site_ruby/2.4.0/rubygems/core_ext/kernel_require.rb:55:in require'
from -e:1:in `'