Restore backup of Gitlab installed from source is failed. Error: 14:channel is in state TRANSIENT_FAILURE

Hello!

I’m trying restore backup of Gitlab installed from source (self-managed). Use command:
bundle exec rake gitlab:backup:restore BACKUP=1585158371_2020_03_25_12.4.8 force=yes RAILS_ENV=production
from official documentation:
https://docs.gitlab.com/ce/raketasks/backup_restore.html#restore

In the restore repository step, I get the following error:

  • example/project … Error: 14:channel is in state TRANSIENT_FAILURE
    [Failed] restoring example/project repository

I’m stopping my Gitlab instanse before begin restore. Version of Gitlab is 12.4.8. Create backup in the same version.
I tried to restore the backup to the same instance of Gitlab. Tried restore backup on the same server but on newly installed “clean” Gitlab 12.4.8. And I get same error.
I find issue in omnibus-gitlab project, with same error discussion:

Here offers input gitaly[‘open_files_ulimit’] = false in gitlab.rb file. But this is fix for Gitlab Omnibus, I can’t find same solution for Gitlab installed from source.

If anyone knows the cause of this error, please share information on how to fix it.

Thanks!