Warbler gem: SystemStackError: stack level too deep

I am trying to create war file of jruby on rails application. i have installed warble gem and inside of my rails application directory i am executing command warble but it's giving me below error. please help me in knowing why i am getting this error.

warble aborted! SystemStackError: stack level too deep /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/task.rb:46:in initialize' /home/administrator/Desktop/imaging-resource-planning/Rakefile:7:in(root)' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:in load' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:240:inload_dependency' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:in load' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:62:inload_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:59:in load_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler.rb:26:inproject_application' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits/rails.rb:27:in before_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:inbefore_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:in before_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/config.rb:213:ininitialize' config/warble.rb:1:in (root)' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/task.rb:46:ininitialize' config/warble.rb:0:in initialize' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:inload' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:240:in load_dependency' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:inload' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:62:in load_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:59:inload_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler.rb:26:in project_application' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits/rails.rb:27:inbefore_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:in before_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:inbefore_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/config.rb:213:in initialize' /home/administrator/Desktop/imaging-resource-planning/Rakefile:7:in(root)' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/task.rb:46:in initialize' config/warble.rb:1:in(root)' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:in load' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:240:inload_dependency' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:in load' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:62:inload_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:59:in load_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler.rb:26:inproject_application' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits/rails.rb:27:in before_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:inbefore_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:in before_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/config.rb:213:ininitialize' config/warble.rb:0:in initialize' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/task.rb:46:ininitialize' /home/administrator/Desktop/imaging-resource-planning/Rakefile:7:in (root)' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:inload' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:240:in load_dependency' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:inload' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:62:in load_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:59:inload_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler.rb:26:in project_application' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits/rails.rb:27:inbefore_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:in before_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:inbefore_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/config.rb:213:in initialize' config/warble.rb:1:in(root)' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/task.rb:46:in initialize' config/warble.rb:0:ininitialize' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:in load' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:240:inload_dependency' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:in load' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:62:inload_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:59:in load_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler.rb:26:inproject_application' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits/rails.rb:27:in before_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:inbefore_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:in before_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/config.rb:213:ininitialize' /home/administrator/Desktop/imaging-resource-planning/Rakefile:7:in (root)' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/task.rb:46:ininitialize' config/warble.rb:1:in (root)' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:inload' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:240:in load_dependency' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:inload' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:62:in load_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:59:inload_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler.rb:26:in project_application' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits/rails.rb:27:inbefore_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:in before_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:inbefore_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/config.rb:213:in initialize' config/warble.rb:0:ininitialize' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/task.rb:46:in initialize' /home/administrator/Desktop/imaging-resource-planning/Rakefile:7:in(root)' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:in load' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:240:inload_dependency' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:in load' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:62:inload_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:59:in load_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler.rb:26:inproject_application' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits/rails.rb:27:in before_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:inbefore_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:in before_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/config.rb:213:ininitialize' config/warble.rb:1:in (root)' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/task.rb:46:ininitialize' config/warble.rb:0:in initialize' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:inload' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:240:in load_dependency' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:inload' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:62:in load_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:59:inload_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler.rb:26:in project_application' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits/rails.rb:27:inbefore_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:in before_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:inbefore_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/config.rb:213:in initialize' /home/administrator/Desktop/imaging-resource-planning/Rakefile:7:in(root)' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/task.rb:46:in initialize' config/warble.rb:1:in(root)' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:in load' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:240:inload_dependency' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:in load' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:62:inload_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:59:in load_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler.rb:26:inproject_application' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits/rails.rb:27:in before_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:inbefore_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:in before_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/config.rb:213:ininitialize' config/warble.rb:0:in initialize' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/task.rb:46:ininitialize' /home/administrator/Desktop/imaging-resource-planning/Rakefile:7:in (root)' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:inload' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:240:in load_dependency' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/activesupport-4.2.0/lib/active_support/dependencies.rb:268:inload' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:62:in load_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/application.rb:59:inload_project_rakefile' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler.rb:26:in project_application' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits/rails.rb:27:inbefore_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:in before_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/traits.rb:29:inbefore_configure' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/config.rb:213:in initialize' config/warble.rb:1:in(root)' /home/administrator/.rvm/gems/jruby-1.7.16@IRP_NEW/gems/warbler-1.4.9/lib/warbler/task.rb:46:in `initialize' (See full trace by running task with --trace)