500 error on project main page

It's actual for all projects imported from GitHub

ArgumentError: key must be 32 bytes or longer
  from encryptor.rb:60:in `crypt'
  from encryptor.rb:49:in `decrypt'
  from attr_encrypted.rb:233:in `decrypt'
  from attr_encrypted.rb:317:in `decrypt'
  from attr_encrypted.rb:155:in `block (2 levels) in attr_encrypted'
  from app/models/project.rb:456:in `import_url'
  from app/models/project.rb:486:in `external_import?'
  from app/models/project.rb:478:in `import?'
  from app/models/project.rb:494:in `import_in_progress?'
  from app/controllers/projects_controller.rb:93:in `show'
  from action_controller/metal/implicit_render.rb:4:in `send_action'
  from abstract_controller/base.rb:198:in `process_action'
  from action_controller/metal/rendering.rb:10:in `process_action'
  from abstract_controller/callbacks.rb:20:in `block in process_action'
  from active_support/callbacks.rb:117:in `call'
  from active_support/callbacks.rb:117:in `call'
  from active_support/callbacks.rb:555:in `block (2 levels) in compile'
  from active_support/callbacks.rb:505:in `call'
  from active_support/callbacks.rb:505:in `call'
  from active_support/callbacks.rb:92:in `__run_callbacks__'
  from active_support/callbacks.rb:778:in `_run_process_action_callbacks'
  from active_support/callbacks.rb:81:in `run_callbacks'
  from abstract_controller/callbacks.rb:19:in `process_action'
  from action_controller/metal/rescue.rb:29:in `process_action'
  from action_controller/metal/instrumentation.rb:32:in `block in process_action'
  from active_support/notifications.rb:164:in `block in instrument'
  from active_support/notifications/instrumenter.rb:20:in `instrument'
  from active_support/notifications.rb:164:in `instrument'
  from action_controller/metal/instrumentation.rb:30:in `process_action'
  from action_controller/metal/params_wrapper.rb:250:in `process_action'
  from active_record/railties/controller_runtime.rb:18:in `process_action'
  from abstract_controller/base.rb:137:in `process'
  from action_view/rendering.rb:30:in `process'
  from action_controller/metal.rb:196:in `dispatch'
  from action_controller/metal/rack_delegation.rb:13:in `dispatch'
  from action_controller/metal.rb:237:in `block in action'
  from action_dispatch/routing/route_set.rb:74:in `call'
  from action_dispatch/routing/route_set.rb:74:in `dispatch'
  from action_dispatch/routing/route_set.rb:43:in `serve'
  from action_dispatch/journey/router.rb:43:in `block in serve'
  from action_dispatch/journey/router.rb:30:in `each'
  from action_dispatch/journey/router.rb:30:in `serve'
  from action_dispatch/routing/route_set.rb:817:in `call'
  from omniauth/strategy.rb:186:in `call!'
  from omniauth/strategy.rb:164:in `call'
  from lib/gitlab/middleware/go.rb:16:in `call'
  from rack/cors.rb:80:in `call'
  from rack/attack.rb:106:in `call'
  from warden/manager.rb:35:in `block in call'
  from warden/manager.rb:34:in `catch'
  from warden/manager.rb:34:in `call'
  from rack/etag.rb:24:in `call'
  from rack/conditionalget.rb:25:in `call'
  from rack/head.rb:13:in `call'
  from action_dispatch/middleware/params_parser.rb:27:in `call'
  from action_dispatch/middleware/flash.rb:260:in `call'
  from rack/session/abstract/id.rb:225:in `context'
  from rack/session/abstract/id.rb:220:in `call'
  from action_dispatch/middleware/cookies.rb:560:in `call'
  from active_record/query_cache.rb:36:in `call'
  from active_record/connection_adapters/abstract/connection_pool.rb:653:in `call'
  from action_dispatch/middleware/callbacks.rb:29:in `block in call'
  from active_support/callbacks.rb:88:in `__run_callbacks__'
  from active_support/callbacks.rb:778:in `_run_call_callbacks'
  from active_support/callbacks.rb:81:in `run_callbacks'
  from action_dispatch/middleware/callbacks.rb:27:in `call'
  from action_dispatch/middleware/remote_ip.rb:78:in `call'
  from action_dispatch/middleware/debug_exceptions.rb:17:in `call'
  from action_dispatch/middleware/show_exceptions.rb:30:in `call'
  from rails/rack/logger.rb:38:in `call_app'
  from rails/rack/logger.rb:20:in `block in call'
  from active_support/tagged_logging.rb:68:in `block in tagged'
  from active_support/tagged_logging.rb:26:in `tagged'
  from active_support/tagged_logging.rb:68:in `tagged'
  from rails/rack/logger.rb:20:in `call'
  from request_store/middleware.rb:9:in `call'
  from action_dispatch/middleware/request_id.rb:21:in `call'
  from rack/methodoverride.rb:22:in `call'
  from rack/runtime.rb:18:in `call'
  from rack/lock.rb:17:in `call'
  from rack/sendfile.rb:113:in `call'
  from raven/integrations/rack.rb:53:in `call'
  from rails/engine.rb:518:in `call'
  from rails/application.rb:165:in `call'
  from rails/railtie.rb:194:in `public_send'
  from rails/railtie.rb:194:in `method_missing'
  from rack/urlmap.rb:66:in `block in call'
  from rack/urlmap.rb:50:in `each'
  from rack/urlmap.rb:50:in `call'
  from unicorn/http_server.rb:580:in `process_client'
  from unicorn/worker_killer.rb:52:in `process_client'
  from unicorn/http_server.rb:674:in `worker_loop'
  from unicorn/http_server.rb:529:in `spawn_missing_workers'
  from unicorn/http_server.rb:540:in `maintain_worker_count'
  from unicorn/http_server.rb:294:in `join'
  from bundle/ruby/2.1.0/gems/unicorn-4.9.0/bin/unicorn_rails:209:in `<top (required)>'
  from bundle/ruby/2.1.0/bin/unicorn_rails:23:in `load'
  from bundle/ruby/2.1.0/bin/unicorn_rails:23:in `<main>'

I'm getting an simmilar error:

Started GET "/projects/my-test-project" for 127.0.0.1 at 2016-06-25 11:17:58 +0000 Processing by ProjectsController#show as HTML Parameters: {"namespace_id"=>"projects", "id"=>"my-test-project"} Completed 500 Internal Server Error in 120ms (ActiveRecord: 9.3ms)

ArgumentError (key must be 32 bytes or longer): app/models/project.rb:456:in import_url' app/models/project.rb:486:in external_import?' app/models/project.rb:478:in import?' app/models/project.rb:494:in import_in_progress?' app/controllers/projects_controller.rb:93:in show' lib/gitlab/middleware/go.rb:16:in call'

It's not on all projects, but on some. Don't know how to fix it.

Thx for helping.

Kind Regards

@Yachtsman Thanks for the report. We will check that! /cc @dbalexandre @jameslopez

Same issue here. Also have the problem when I try to create some projet (since we tried to fix the original problem by deleting a faulting project and recreate it).

Started POST "/gitlab/projects" for 178.238.175.64 at 2016-06-26 12:40:01 +0200
Processing by ProjectsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"[FILTERED]", "project"=>{"namespace_id"=>"2", "path"=>"fioupfioup", "import_url"=>"[FILTERED]", "description"=>"", "visibility_level"=>"0"}}
Unable to save project. Error: key must be 32 bytes or longer
Completed 500 Internal Server Error in 20ms (ActiveRecord: 0.6ms)
NoMethodError (undefined method `saved?' for nil:NilClass):
app/controllers/projects_controller.rb:30:in `create'
lib/gitlab/middleware/go.rb:16:in `call'
Started GET "/gitlab/projects/new" for 178.238.175.64 at 2016-06-26 12:40:02 +0200

Seems to be a duplicate (or at least related to) #19073 (closed)

thanks all for reporting this. I do believe is a also a duplicate Sebastian, so I'm gonna close this issue in favour of https://gitlab.com/gitlab-org/gitlab-ce/issues/19073 which is older.

Status changed to closed

mentioned in issue #19073 (closed)