Automatic database reindexing in Gitlab not working

We have made Automatic database reindexing in Gitlab,with below property

gitlab_rails[‘database_reindexing’][‘enable’]=true
gitlab_rails[‘database_reindexing’][‘hour’] = ‘
gitlab_rails[‘database_reindexing’][‘minute’] = 0
gitlab_rails[‘database_reindexing’][‘month’] = '

gitlab_rails[‘database_reindexing’][‘day_of_month’] = ‘*’
gitlab_rails[‘database_reindexing’][‘day_of_week’] = ‘0,6’

After restarting and also

sudo gitlab-ctl reconfigure

Reindexing is not working,while we try to manually run the below command.

sudo gitlab-rake gitlab:db:reindex

We are getting Reindex is not enabled.