Checking Reply by email ...

IMAP server credentials are correct? ... /opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/redis.rb:3: warning: already initialized constant Gitlab::Redis::CACHE_NAMESPACE
/opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/redis.rb:3: warning: previous definition of CACHE_NAMESPACE was here
/opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/redis.rb:4: warning: already initialized constant Gitlab::Redis::SESSION_NAMESPACE
/opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/redis.rb:4: warning: previous definition of SESSION_NAMESPACE was here
/opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/redis.rb:5: warning: already initialized constant Gitlab::Redis::SIDEKIQ_NAMESPACE
/opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/redis.rb:5: warning: previous definition of SIDEKIQ_NAMESPACE was here
/opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/redis.rb:12: warning: already initialized constant Gitlab::Redis::URL_MUTEX
/opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/redis.rb:12: warning: previous definition of URL_MUTEX was here
/opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/redis.rb:13: warning: already initialized constant Gitlab::Redis::POOL_MUTEX
/opt/gitlab/embedded/service/gitlab-rails/lib/gitlab/redis.rb:13: warning: previous definition of POOL_MUTEX was here
rake aborted!
NoMethodError: undefined method `first' for nil:NilClass
/opt/gitlab/embedded/service/gitlab-rails/lib/tasks/gitlab/check.rake:718:in `check_imap_authentication'
/opt/gitlab/embedded/service/gitlab-rails/lib/tasks/gitlab/check.rake:626:in `block (3 levels) in <top (required)>'
Tasks: TOP => gitlab:check => gitlab:incoming_email:check
(See full trace by running task with --trace)