"An error occurred fetching the approval rules" message in general settings of project

Summary

When opening the admin area of one of the projects on our self-hosted Gitlab (11.10.4-ee), we see the message "An error occurred fetching the approval rules" and under Merge request approvals, the list of approvers is not showing. This causes us to not being able to approve any merge request.

Steps to reproduce

Add a merge request and go to approve it. This will fail. When going to Admin Area the error message will show under the General tab of the settings.

Example Project

Not possible to recreate the issue on here, but we have 4 projects with this issue.

What is the current bug behavior?

Can't approve merge requests even if we are in the approvers list.

What is the expected correct behavior?

We can approve a merge request if we are in the approvers list.

Relevant logs and/or screenshots

image image image

Results of GitLab environment info

Expand for output related to GitLab environment info 
System information
System:
Proxy:          no
Current User:   git
Using RVM:      no
Ruby Version:   2.5.3p105
Gem Version:    2.7.6
Bundler Version:1.17.3
Rake Version:   12.3.2
Redis Version:  3.2.12
Git Version:    2.18.1
Sidekiq Version:5.2.5
Go Version:     unknown


GitLab information
Version:        11.10.4-ee
Revision:       88a3c791734
Directory:      /opt/gitlab/embedded/service/gitlab-rails
DB Adapter:     PostgreSQL
DB Version:     9.6.11
URL:            http://10.67.72.168
HTTP Clone URL: http://10.67.72.168/some-group/some-project.git
SSH Clone URL:  git@10.67.72.168:some-group/some-project.git
Elasticsearch:  no
Geo:            no
Using LDAP:     yes
Using Omniauth: yes
Omniauth Providers:


GitLab Shell
Version:        9.0.0
Repository storage paths:
  • default: /var/opt/gitlab/git-data/repositories GitLab Shell path: /opt/gitlab/embedded/service/gitlab-shell Git: /opt/gitlab/embedded/bin/git

Results of GitLab application Check

Expand for output related to the GitLab application check 
Checking GitLab subtasks ...


Checking GitLab Shell ...


GitLab Shell: ... GitLab Shell version >= 9.0.0 ? ... OK (9.0.0)
Running /opt/gitlab/embedded/service/gitlab-shell/bin/check
Check GitLab API access: OK
Redis available via internal API: OK


Access to /var/opt/gitlab/.ssh/authorized_keys: OK
gitlab-shell self-check successful


Checking GitLab Shell ... Finished


Checking Gitaly ...


Gitaly: ... default ... OK


Checking Gitaly ... Finished


Checking Sidekiq ...


Sidekiq: ... Running? ... yes
Number of Sidekiq processes ... 1


Checking Sidekiq ... Finished


Checking Incoming Email ...


Incoming Email: ... Reply by email is disabled in config/gitlab.yml


Checking Incoming Email ... Finished


Checking LDAP ...


LDAP: ... Server: ldapmain
not verifying SSL hostname of LDAPS server 'ldap.dap:389'
LDAP authentication... Success
LDAP users with access to your GitLab server (only showing the first 100 results)
DN: uid=dj,ou=named,dc=dap       uid: dj
DN: uid=bert,ou=named,dc=dap     uid: bert
DN: uid=kevin,ou=named,dc=dap    uid: kevin
DN: uid=pverbruggen,ou=named,dc=dap      uid: pverbruggen
DN: uid=rgys,ou=named,dc=dap     uid: rgys
DN: uid=nt,ou=named,dc=dap       uid: nt
DN: uid=wcools,ou=named,dc=dap   uid: wcools
DN: uid=acdegeus,ou=named,dc=dap         uid: acdegeus
DN: uid=ddelahaye,ou=named,dc=dap        uid: ddelahaye
DN: uid=uleonard,ou=named,dc=dap         uid: uleonard
DN: uid=suma,ou=named,dc=dap     uid: suma
DN: uid=ajit,ou=named,dc=dap     uid: ajit
DN: uid=bcarette,ou=named,dc=dap         uid: bcarette
DN: uid=jalvarez,ou=named,dc=dap         uid: jalvarez
DN: uid=pvanhorebeek,ou=named,dc=dap     uid: pvanhorebeek
DN: uid=apanny,ou=named,dc=dap   uid: apanny
DN: uid=tvanduuren,ou=named,dc=dap       uid: tvanduuren
DN: uid=lbaelen,ou=named,dc=dap  uid: lbaelen
DN: uid=smitea,ou=named,dc=dap   uid: smitea
DN: uid=bmunters,ou=named,dc=dap         uid: bmunters
DN: uid=locampo,ou=named,dc=dap  uid: locampo
DN: uid=speirsman,ou=named,dc=dap        uid: speirsman
DN: uid=jgrondman,ou=named,dc=dap        uid: jgrondman
DN: uid=benhirsch,ou=named,dc=dap        uid: benhirsch
DN: uid=odebie,ou=named,dc=dap   uid: odebie
DN: uid=hvanthournhout,ou=named,dc=dap   uid: hvanthournhout
DN: uid=yvindevogel,ou=named,dc=dap      uid: yvindevogel
DN: uid=jvangorp,ou=named,dc=dap         uid: jvangorp
DN: uid=ggyselynck,ou=named,dc=dap       uid: ggyselynck
DN: uid=jvangysel,ou=named,dc=dap        uid: jvangysel
DN: uid=sovandaele,ou=named,dc=dap       uid: sovandaele
DN: uid=bverhoeve,ou=named,dc=dap        uid: bverhoeve
DN: uid=bradeschouwer,ou=named,dc=dap    uid: bradeschouwer
DN: uid=kasdeblieck,ou=named,dc=dap      uid: kasdeblieck
DN: uid=efannoy,ou=named,dc=dap  uid: efannoy


Checking LDAP ... Finished


Checking GitLab App ...


Git configured correctly? ... yes
Database config exists? ... yes
All migrations up? ... yes
Database contains orphaned GroupMembers? ... no
GitLab config exists? ... yes
GitLab config up to date? ... yes
Log directory writable? ... yes
Tmp directory writable? ... yes
Uploads directory exists? ... yes
Uploads directory has correct permissions? ... yes
Uploads directory tmp has correct permissions? ... yes
Init script exists? ... skipped (omnibus-gitlab has no init script)
Init script up-to-date? ... skipped (omnibus-gitlab has no init script)
Projects have namespace: ...
5/2 ... yes
20/4 ... yes
25/5 ... yes
25/6 ... yes
Redis version >= 2.8.0? ... yes
Ruby version >= 2.5.3 ? ... yes (2.5.3)
Git version >= 2.18.0 ? ... yes (2.18.1)
Git user has default SSH configuration? ... yes
Active users: ... 22
Elasticsearch version 5.6 - 6.x? ... skipped (elasticsearch is disabled)


Checking GitLab App ... Finished


Checking GitLab subtasks ... Finished

Possible fixes

No fix until now.

Edited by Kevin Andriessens