Why does an error occur when creating a backup in GiTLAB?

Question

linux

Error output:
[email protected]:/var/log/gitlab# sudo gitlab-rake gitlab:backup:create

Dumping database ...
rake aborted!
NameError: uninitialized constant Backup::Database
/opt/gitlab/embedded/service/gitlab-rails/lib/tasks/gitlab/backup.rake:99:in `block (4 levels) in '
/opt/gitlab/embedded/service /gitlab-rails/lib/tasks/gitlab/backup.rake:10:in `block (3 levels) in '
/opt/gitlab/embedded/bin/bundle:23:in `load'
/opt/gitlab/embedded/ bin/bundle:23:in `'
Tasks: TOP => gitlab:backup:db:create
(See full trace by running task with --trace)