Redmine

Hi anyone,

My attempt to delete one of roles gave me error on the browser like this:

Internal error

An error occurred on the page you were trying to access.
If you continue to experience problems please contact your Redmine administrator for assistance.

If you are the Redmine administrator, check your log files for details about the error.

This is the last lines of my redmine's production.log:

Started DELETE "/redmine/roles/7" for my.laptop.ip.address at 2015-05-26 22:59:05 +0800
Processing by RolesController#destroy as HTML
  Parameters: {"authenticity_token"=>"ykJO73gDXuMF8VMKdnzk8nCBcRGFTkRPpmCgrxl4zIh1U4O+DMFyqkZCSC0pZtISorKYWOAj1unlgGoLwEDWfw==", "id"=>"7"}
  Current user: admin (id=1)
Redirected to http://my.redmine.ip.address/redmine/roles
Completed 500 Internal Server Error in 183ms (ActiveRecord: 4.2ms)

Rugged::NetworkError (Unsupported URL protocol):
  /var/lib/gems/1.9.1/bundler/gems/gitolite-rugged-eaa0d7a84b30/lib/gitolite/gitolite_admin.rb:311:in `clone_at'
  /var/lib/gems/1.9.1/bundler/gems/gitolite-rugged-eaa0d7a84b30/lib/gitolite/gitolite_admin.rb:311:in `clone'
  /var/lib/gems/1.9.1/bundler/gems/gitolite-rugged-eaa0d7a84b30/lib/gitolite/gitolite_admin.rb:110:in `initialize'
  plugins/redmine_git_hosting/lib/redmine_git_hosting/gitolite_wrapper.rb:67:in `new'
  plugins/redmine_git_hosting/lib/redmine_git_hosting/gitolite_wrapper.rb:67:in `gitolite_admin'
  plugins/redmine_git_hosting/lib/redmine_git_hosting/gitolite_wrapper.rb:39:in `resync_gitolite'
  plugins/redmine_git_hosting/lib/redmine_git_hosting.rb:50:in `resync_gitolite'
  plugins/redmine_git_hosting/app/services/gitolite_accessor.rb:109:in `resync_gitolite'
  plugins/redmine_git_hosting/app/services/gitolite_accessor.rb:55:in `update_projects'
  plugins/redmine_git_hosting/lib/redmine_git_hosting/patches/roles_controller_patch.rb:54:in `call_gitolite'
  plugins/redmine_git_hosting/lib/redmine_git_hosting/patches/roles_controller_patch.rb:38:in `destroy_with_git_hosting'
  actionpack (4.2.1) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
  actionpack (4.2.1) lib/abstract_controller/base.rb:198:in `process_action'
  actionpack (4.2.1) lib/action_controller/metal/rendering.rb:10:in `process_action'
  actionpack (4.2.1) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
  activesupport (4.2.1) lib/active_support/callbacks.rb:117:in `call'
  activesupport (4.2.1) lib/active_support/callbacks.rb:117:in `call'
  activesupport (4.2.1) lib/active_support/callbacks.rb:555:in `block (2 levels) in compile'
  activesupport (4.2.1) lib/active_support/callbacks.rb:505:in `call'
  activesupport (4.2.1) lib/active_support/callbacks.rb:505:in `call'
  activesupport (4.2.1) lib/active_support/callbacks.rb:92:in `_run_callbacks'
  activesupport (4.2.1) lib/active_support/callbacks.rb:776:in `_run_process_action_callbacks'
  activesupport (4.2.1) lib/active_support/callbacks.rb:81:in `run_callbacks'
  actionpack (4.2.1) lib/abstract_controller/callbacks.rb:19:in `process_action'
  actionpack (4.2.1) lib/action_controller/metal/rescue.rb:29:in `process_action'
  actionpack (4.2.1) lib/action_controller/metal/instrumentation.rb:32:in `block in process_action'
  activesupport (4.2.1) lib/active_support/notifications.rb:164:in `block in instrument'
  activesupport (4.2.1) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
  activesupport (4.2.1) lib/active_support/notifications.rb:164:in `instrument'
  actionpack (4.2.1) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
  actionpack (4.2.1) lib/action_controller/metal/params_wrapper.rb:250:in `process_action'
  activerecord (4.2.1) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
  actionpack (4.2.1) lib/abstract_controller/base.rb:137:in `process'
  actionview (4.2.1) lib/action_view/rendering.rb:30:in `process'
  actionpack (4.2.1) lib/action_controller/metal.rb:196:in `dispatch'
  actionpack (4.2.1) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
  actionpack (4.2.1) lib/action_controller/metal.rb:237:in `block in action'
  actionpack (4.2.1) lib/action_dispatch/routing/route_set.rb:74:in `call'
  actionpack (4.2.1) lib/action_dispatch/routing/route_set.rb:74:in `dispatch'
  actionpack (4.2.1) lib/action_dispatch/routing/route_set.rb:43:in `serve'
  actionpack (4.2.1) lib/action_dispatch/journey/router.rb:43:in `block in serve'
  actionpack (4.2.1) lib/action_dispatch/journey/router.rb:30:in `each'
  actionpack (4.2.1) lib/action_dispatch/journey/router.rb:30:in `serve'
  actionpack (4.2.1) lib/action_dispatch/routing/route_set.rb:819:in `call'
  rack-openid (1.4.2) lib/rack/openid.rb:98:in `call'
  request_store (1.0.5) lib/request_store/middleware.rb:9:in `call'
  rack (1.6.1) lib/rack/etag.rb:24:in `call'
  rack (1.6.1) lib/rack/conditionalget.rb:38:in `call'
  rack (1.6.1) lib/rack/head.rb:13:in `call'
  actionpack-xml_parser (1.0.2) lib/action_dispatch/xml_params_parser.rb:16:in `call'
  actionpack (4.2.1) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
  actionpack (4.2.1) lib/action_dispatch/middleware/flash.rb:260:in `call'
  rack (1.6.1) lib/rack/session/abstract/id.rb:225:in `context'
  rack (1.6.1) lib/rack/session/abstract/id.rb:220:in `call'
  actionpack (4.2.1) lib/action_dispatch/middleware/cookies.rb:560:in `call'
  activerecord (4.2.1) lib/active_record/query_cache.rb:36:in `call'
  activerecord (4.2.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:649:in `call'
  actionpack (4.2.1) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
  activesupport (4.2.1) lib/active_support/callbacks.rb:88:in `call'
  activesupport (4.2.1) lib/active_support/callbacks.rb:88:in `_run_callbacks'
  activesupport (4.2.1) lib/active_support/callbacks.rb:776:in `_run_call_callbacks'
  activesupport (4.2.1) lib/active_support/callbacks.rb:81:in `run_callbacks'
  actionpack (4.2.1) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
  actionpack (4.2.1) lib/action_dispatch/middleware/remote_ip.rb:78:in `call'
  actionpack (4.2.1) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
  actionpack (4.2.1) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
  railties (4.2.1) lib/rails/rack/logger.rb:38:in `call_app'
  railties (4.2.1) lib/rails/rack/logger.rb:20:in `block in call'
  activesupport (4.2.1) lib/active_support/tagged_logging.rb:68:in `block in tagged'
  activesupport (4.2.1) lib/active_support/tagged_logging.rb:26:in `tagged'
  activesupport (4.2.1) lib/active_support/tagged_logging.rb:68:in `tagged'
  railties (4.2.1) lib/rails/rack/logger.rb:20:in `call'
  actionpack (4.2.1) lib/action_dispatch/middleware/request_id.rb:21:in `call'
  rack (1.6.1) lib/rack/methodoverride.rb:22:in `call'
  rack (1.6.1) lib/rack/runtime.rb:18:in `call'
  activesupport (4.2.1) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
  actionpack (4.2.1) lib/action_dispatch/middleware/static.rb:113:in `call'
  rack (1.6.1) lib/rack/sendfile.rb:113:in `call'
  railties (4.2.1) lib/rails/engine.rb:518:in `call'
  railties (4.2.1) lib/rails/application.rb:164:in `call'
  railties (4.2.1) lib/rails/railtie.rb:194:in `public_send'
  railties (4.2.1) lib/rails/railtie.rb:194:in `method_missing'
  /usr/lib/ruby/vendor_ruby/phusion_passenger/rack/thread_handler_extension.rb:77:in `process_request'
  /usr/lib/ruby/vendor_ruby/phusion_passenger/request_handler/thread_handler.rb:142:in `accept_and_process_next_request'
  /usr/lib/ruby/vendor_ruby/phusion_passenger/request_handler/thread_handler.rb:110:in `main_loop'
  /usr/lib/ruby/vendor_ruby/phusion_passenger/request_handler.rb:448:in `block (3 levels) in start_threads'

This is my redmine installation:

Redmine 3.0.3.stable

Default administrator account changed    True
Attachments directory writable    True
Plugin assets directory writable (./public/plugin_assets)    True
RMagick available (optional)    True
ImageMagick convert available (optional)    True

Environment:
  Redmine version                3.0.3.stable
  Ruby version                   1.9.3-p484 (2013-11-22) [i686-linux]
  Rails version                  4.2.1
  Environment                    production
  Database adapter               Mysql2
SCM:
  Git                            1.9.1
  Filesystem                     
  Xitolite                       1.9.1
Redmine plugins:
  clipboard_image_paste          1.10
  progressive_projects_list      2.0.1
  redmine_bootstrap_kit          0.2.3
  redmine_git_hosting            1.0.4
  redmine_spent_time             3.0.1

Can anyone tell me what went wrong and what to fix?

Thanks,
Abubobe