Install issue in openshift

[metaversed]

I am unable to deploy successfully(Container:
myworkshop— Crash loop back off) and below is the log I can share for your reference.
Please let me know if you have seen this

undler: failed to load command: rackup (/workshopper/vendor/bundle/ruby/2.5.0/bin/rackup)
TypeError: no implicit conversion of nil into String
/workshopper/lib/workshopper/content.rb:12:in join' /workshopper/lib/workshopper/content.rb:12:in initialize'
/workshopper/lib/workshopper/workshop.rb:19:in new' /workshopper/lib/workshopper/workshop.rb:19:in initialize'
/workshopper/lib/workshopper/cache.rb:12:in new' /workshopper/lib/workshopper/cache.rb:12:in add'
/workshopper/config/initializers/workshopper.rb:8:in block in <top (required)>' /workshopper/config/initializers/workshopper.rb:7:in each'
/workshopper/config/initializers/workshopper.rb:7:in <top (required)>' /workshopper/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:285:in load'
/workshopper/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:285:in block in load' /workshopper/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:257:in load_dependency'
/workshopper/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies.rb:285:in load' /workshopper/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/engine.rb:657:in block in load_config_initializer'
/workshopper/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/notifications.rb:170:in instrument' /workshopper/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/engine.rb:656:in load_config_initializer'
/workshopper/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/engine.rb:614:in block (2 levels) in <class:Engine>' /workshopper/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/engine.rb:613:in each'
/workshopper/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/engine.rb:613:in block in <class:Engine>' /workshopper/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/initializable.rb:32:in instance_exec'
/workshopper/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/initializable.rb:32:in run' /workshopper/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/initializable.rb:61:in block in run_initializers'
/opt/essentials/lib/ruby/2.5.0/tsort.rb:228:in block in tsort_each' /opt/essentials/lib/ruby/2.5.0/tsort.rb:350:in block (2 levels) in each_strongly_connected_component'
/opt/essentials/lib/ruby/2.5.0/tsort.rb:422:in block (2 levels) in each_strongly_connected_component_from' /opt/essentials/lib/ruby/2.5.0/tsort.rb:431:in each_strongly_connected_component_from'
/opt/essentials/lib/ruby/2.5.0/tsort.rb:421:in block in each_strongly_connected_component_from' /workshopper/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/initializable.rb:50:in each'
/workshopper/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/initializable.rb:50:in tsort_each_child' /opt/essentials/lib/ruby/2.5.0/tsort.rb:415:in call'
/opt/essentials/lib/ruby/2.5.0/tsort.rb:415:in each_strongly_connected_component_from' /opt/essentials/lib/ruby/2.5.0/tsort.rb:349:in block in each_strongly_connected_component'
/opt/essentials/lib/ruby/2.5.0/tsort.rb:347:in each' /opt/essentials/lib/ruby/2.5.0/tsort.rb:347:in call'
/opt/essentials/lib/ruby/2.5.0/tsort.rb:347:in each_strongly_connected_component' /opt/essentials/lib/ruby/2.5.0/tsort.rb:226:in tsort_each'
/opt/essentials/lib/ruby/2.5.0/tsort.rb:205:in tsort_each' /workshopper/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/initializable.rb:60:in run_initializers'
/workshopper/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/application.rb:361:in initialize!' /workshopper/config/environment.rb:5:in <top (required)>'
/workshopper/config.ru:3:in require_relative' /workshopper/config.ru:3:in block in

'
/workshopper/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/builder.rb:55:in instance_eval' /workshopper/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/builder.rb:55:in initialize'
/workshopper/config.ru:in new' /workshopper/config.ru:in '
/workshopper/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/builder.rb:49:in eval' /workshopper/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/builder.rb:49:in new_from_string'
/workshopper/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/builder.rb:40:in parse_file' /workshopper/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/server.rb:319:in build_app_and_options_from_config'
/workshopper/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/server.rb:219:in app' /workshopper/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/server.rb:354:in wrapped_app'
/workshopper/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/server.rb:283:in start' /workshopper/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/server.rb:148:in start'
/workshopper/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/bin/rackup:4:in <top (required)>' /workshopper/vendor/bundle/ruby/2.5.0/bin/rackup:23:in load'
/workshopper/vendor/bundle/ruby/2.5.0/bin/rackup:23:in `<top (required)>'