Showing 500 on "NEW PROJECT" and some admin page (because of relative URL or migration fault??)

Summary:Some page showing 500, and gitlab-rake db:migrate RAILS_ENV=production got error (two event link is uncertain)

I'm using gitlab omnibus CE ver 8.1.2(recently update), CentOS 6.7(64bit) . I have updated gitlab by creating backup, removing old version, and migration. That's because I failed normal update method (using yum) Also, I changed setting of gitlab for relative URL as "http://example.com/gitlab" . To archive this, I changed Nginx port , and redirect from 80 port (by Apache) . This method is mainly followed by /opt/gitlab/embedded/service/gitlab-rails/config/application.rb .

However, I got 500 on /gitlab/projects/new (NEW PROJECT's page)

==> /var/log/gitlab/gitlab-rails/production.log <==
Started GET "/gitlab/projects/new" for XXX.YYY.ZZZ.WWW at 2015-11-16 03:23:45 +0900
Processing by ProjectsController#new as HTML
Completed 500 Internal Server Error in 342ms (ActiveRecord: 11.3ms)

ActionView::Template::Error (undefined method `import_sources' for #<ApplicationSetting:0x0000000c35d908>):
    22:           .col-sm-10
    23:             = f.select :namespace_id, namespaces_options(params[:namespace_id] || :current_user), {}, {class: 'select2', tabindex: 2}
    24: 
    25:       - if import_sources_enabled?
    26: 
    27:         .project-import.js-toggle-container
    28:           .form-group
  app/controllers/application_controller.rb:307:in `import_sources_enabled?'
  app/views/projects/new.html.haml:25:in `block in _app_views_projects_new_html_haml___4174722689259721156_102776600'
  app/views/projects/new.html.haml:8:in `_app_views_projects_new_html_haml___4174722689259721156_102776600'

and /gitlab/admin/hooks(Admin area => Hooks)

==> /var/log/gitlab/gitlab-rails/production.log <==
Started GET "/gitlab/admin/hooks" for 175.177.252.228 at 2015-11-16 03:26:51 +0900
Processing by Admin::HooksController#index as HTML
Completed 500 Internal Server Error in 40ms (ActiveRecord: 4.8ms)

NoMethodError (undefined method `enable_ssl_verification=' for #<SystemHook:0x0000000cdb0720>):
  app/controllers/admin/hooks_controller.rb:4:in `index'

and /gitlab/admin/labels (Admin area => Labels)

==> /var/log/gitlab/gitlab-rails/production.log <==
PG::UndefinedColumn: ERROR:  column labels.template does not exist
LINE 1: SELECT  "labels".* FROM "labels"  WHERE "labels"."template" ...
                                                ^
: SELECT  "labels".* FROM "labels"  WHERE "labels"."template" = 't'  ORDER BY "labels"."title" ASC LIMIT 20 OFFSET 0
Completed 500 Internal Server Error in 55ms (ActiveRecord: 9.1ms)

ActionView::Template::Error (PG::UndefinedColumn: ERROR:  column labels.template does not exist
LINE 1: SELECT  "labels".* FROM "labels"  WHERE "labels"."template" ...
                                                ^
: SELECT  "labels".* FROM "labels"  WHERE "labels"."template" = 't'  ORDER BY "labels"."title" ASC LIMIT 20 OFFSET 0):
     6: %hr
     7: 
     8: .labels
     9:   - if @labels.present?
    10:     %ul.bordered-list.manage-labels-list
    11:       = render @labels
    12:     = paginate @labels, theme: 'gitlab'
  app/views/admin/labels/index.html.haml:9:in `_app_views_admin_labels_index_html_haml___1571291829867217325_105791540'

First, I thought this error comes from relative URL error . So I decided to submit this issue. However, I did gitlab-rake gitlab:check, and got

All migrations up? ... no
  Try fixing it:
  sudo -u git -H bundle exec rake db:migrate RAILS_ENV=production
  Please fix the error above and rerun the checks.

So I did gitlab-rake db:migrate RAILS_ENV=production, and got this error

== 20150818213832 AddSentNotifications: migrating =============================
-- create_table(:sent_notifications)
rake aborted!
StandardError: An error has occurred, this and all later migrations canceled:

PG::DuplicateTable: ERROR:  relation "sent_notifications" already exists
: CREATE TABLE "sent_notifications" ("id" serial primary key, "project_id" integer, "noteable_id" integer, "noteable_type" character varying(255), "recipient_id" integer, "commit_id" character varying(255), "reply_key" character varying(255) NOT NULL) /opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/postgresql/database_statements.rb:128:in `async_exec'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/postgresql/database_statements.rb:128:in `block in execute'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract_adapter.rb:378:in `block in log'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activesupport-4.1.12/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract_adapter.rb:372:in `log'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/postgresql/database_statements.rb:127:in `execute'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract/schema_statements.rb:205:in `create_table'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:656:in `block in method_missing'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:628:in `block in say_with_time'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:628:in `say_with_time'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:648:in `method_missing'
/opt/gitlab/embedded/service/gitlab-rails/db/migrate/20150818213832_add_sent_notifications.rb:3:in `change'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:602:in `exec_migration'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:586:in `block (2 levels) in migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:585:in `block in migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract/connection_pool.rb:294:in `with_connection'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:584:in `migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:759:in `migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:998:in `block in execute_migration_in_transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:1044:in `block in ddl_transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract/database_statements.rb:201:in `block in transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract/database_statements.rb:209:in `within_new_transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract/database_statements.rb:201:in `transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/transactions.rb:208:in `transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:1044:in `ddl_transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:997:in `execute_migration_in_transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:959:in `block in migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:955:in `each'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:955:in `migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:814:in `up'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:792:in `migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/railties/databases.rake:34:in `block (2 levels) in <top (required)>'
ActiveRecord::StatementInvalid: PG::DuplicateTable: ERROR:  relation "sent_notifications" already exists
: CREATE TABLE "sent_notifications" ("id" serial primary key, "project_id" integer, "noteable_id" integer, "noteable_type" character varying(255), "recipient_id" integer, "commit_id" character varying(255), "reply_key" character varying(255) NOT NULL) 
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/postgresql/database_statements.rb:128:in `async_exec'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/postgresql/database_statements.rb:128:in `block in execute'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract_adapter.rb:378:in `block in log'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activesupport-4.1.12/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract_adapter.rb:372:in `log'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/postgresql/database_statements.rb:127:in `execute'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract/schema_statements.rb:205:in `create_table'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:656:in `block in method_missing'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:628:in `block in say_with_time'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:628:in `say_with_time'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:648:in `method_missing'
/opt/gitlab/embedded/service/gitlab-rails/db/migrate/20150818213832_add_sent_notifications.rb:3:in `change'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:602:in `exec_migration'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:586:in `block (2 levels) in migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:585:in `block in migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract/connection_pool.rb:294:in `with_connection'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:584:in `migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:759:in `migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:998:in `block in execute_migration_in_transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:1044:in `block in ddl_transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract/database_statements.rb:201:in `block in transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract/database_statements.rb:209:in `within_new_transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract/database_statements.rb:201:in `transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/transactions.rb:208:in `transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:1044:in `ddl_transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:997:in `execute_migration_in_transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:959:in `block in migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:955:in `each'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:955:in `migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:814:in `up'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:792:in `migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/railties/databases.rake:34:in `block (2 levels) in <top (required)>'
PG::DuplicateTable: ERROR:  relation "sent_notifications" already exists
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/postgresql/database_statements.rb:128:in `async_exec'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/postgresql/database_statements.rb:128:in `block in execute'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract_adapter.rb:378:in `block in log'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activesupport-4.1.12/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract_adapter.rb:372:in `log'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/postgresql/database_statements.rb:127:in `execute'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract/schema_statements.rb:205:in `create_table'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:656:in `block in method_missing'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:628:in `block in say_with_time'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:628:in `say_with_time'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:648:in `method_missing'
/opt/gitlab/embedded/service/gitlab-rails/db/migrate/20150818213832_add_sent_notifications.rb:3:in `change'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:602:in `exec_migration'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:586:in `block (2 levels) in migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:585:in `block in migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract/connection_pool.rb:294:in `with_connection'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:584:in `migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:759:in `migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:998:in `block in execute_migration_in_transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:1044:in `block in ddl_transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract/database_statements.rb:201:in `block in transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract/database_statements.rb:209:in `within_new_transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/connection_adapters/abstract/database_statements.rb:201:in `transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/transactions.rb:208:in `transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:1044:in `ddl_transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:997:in `execute_migration_in_transaction'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:959:in `block in migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:955:in `each'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:955:in `migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:814:in `up'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/migration.rb:792:in `migrate'
/opt/gitlab/embedded/service/gem/ruby/2.1.0/gems/activerecord-4.1.12/lib/active_record/railties/databases.rake:34:in `block (2 levels) in <top (required)>'
Tasks: TOP => db:migrate
(See full trace by running task with --trace)

This failure is not occurred when I used gitlab ver 7.11.4 with relative URL . So I'm not sure, it would be based on migration error .

regard