Relation " projects " does not exists

Hello to all the community of gitlab !

I come to ask for help you today concerning my installation of gitlab…
I followed a tutoriel to install gitlab-ctl on debian 7, but from moment i execute this command :

sudo -u gitlab -H bundle exec rake gitlab:check RAILS_ENV=production

i obtain this:

Checking Environment ...

Git configured for gitlab user? ... yes
Has python2? ... yes
python2 is supported version? ... yes

Checking Environment ... Finished

Checking GitLab Shell ...

GitLab Shell version >= 1.7.9 ? ... OK (1.9.0)
Repo base directory exists? ... yes
Repo base directory is a symlink? ... no
Repo base owned by gitlab:gitlab? ... yes
Repo base access is drwxrws---? ... yes
update hook up-to-date? ... yes
update hooks in repos are links: ... rake aborted!
PG::Error: ERREUR:  la relation « projects » n'existe pas
LINE 5:                WHERE a.attrelid = '"projects"'::regclass
                                          ^
:               SELECT a.attname, format_type(a.atttypid, a.atttypmod),
                     pg_get_expr(d.adbin, d.adrelid), a.attnotnull, a.atttypid, a.atttypmod
                FROM pg_attribute a LEFT JOIN pg_attrdef d
                  ON a.attrelid = d.adrelid AND a.attnum = d.adnum
               WHERE a.attrelid = '"projects"'::regclass
                 AND a.attnum > 0 AND NOT a.attisdropped
               ORDER BY a.attnum
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.2/lib/active_record/connection_adapters/postgresql_adapter.rb:774:in `exec'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.2/lib/active_record/connection_adapters/postgresql_adapter.rb:774:in `exec_no_cache'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.2/lib/active_record/connection_adapters/postgresql/database_statements.rb:138:in `block in exec_query'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.2/lib/active_record/connection_adapters/abstract_adapter.rb:435:in `block in log'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activesupport-4.0.2/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.2/lib/active_record/connection_adapters/abstract_adapter.rb:430:in `log'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.2/lib/active_record/connection_adapters/postgresql/database_statements.rb:137:in `exec_query'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.2/lib/active_record/connection_adapters/postgresql_adapter.rb:921:in `column_definitions'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.2/lib/active_record/connection_adapters/postgresql/schema_statements.rb:174:in `columns'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.2/lib/active_record/connection_adapters/schema_cache.rb:114:in `block in prepare_default_proc'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.2/lib/active_record/connection_adapters/schema_cache.rb:56:in `yield'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.2/lib/active_record/connection_adapters/schema_cache.rb:56:in `columns'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.2/lib/active_record/model_schema.rb:208:in `columns'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.2/lib/active_record/model_schema.rb:254:in `column_names'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.2/lib/active_record/relation/calculations.rb:229:in `aggregate_column'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.2/lib/active_record/relation/calculations.rb:252:in `execute_simple_calculation'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.2/lib/active_record/relation/calculations.rb:224:in `perform_calculation'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.2/lib/active_record/relation/calculations.rb:108:in `calculate'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-deprecated_finders-1.0.3/lib/active_record/deprecated_finders/relation.rb:84:in `calculate'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.2/lib/active_record/relation/calculations.rb:24:in `count'
/home/gitlab/gitlab/vendor/bundle/ruby/2.0.0/gems/activerecord-4.0.2/lib/active_record/querying.rb:12:in `count'
/home/gitlab/gitlab/lib/tasks/gitlab/check.rake:520:in `check_repos_update_hooks_is_link'
/home/gitlab/gitlab/lib/tasks/gitlab/check.rake:379:in `block (3 levels) in <top (required)>'
Tasks: TOP => gitlab:check => gitlab:gitlab_shell:check
(See full trace by running task with --trace)

And I do not unfortunately manage to solve this problem… I have already looked on this forum, but techniques to fix this problem work unfortunately not with me…

You can answer me in French if you wish, I speak both languages.

Best regards, COLINET Cyril.