Wiki can not Attach a file: POST /api/v4/projects/XX/wikis/attachments 403 (Forbidden)

Summary

After update Gitlab, Wiki can not Attach a file. When i select a file, 403 (Forbidden) error show.

Steps to reproduce

Enter Wiki pages, edit or new page. Press Attach a file, select a file, press ok.

Example Project

http://27.17.7.86:96/open/test/wikis/home/edit

• Username: bug
• Password: 12345678

What is the current bug behavior?

Wiki can not Attach a file

What is the expected correct behavior?

attach a file ok

Relevant logs and/or screenshots

The right bottom of editor show error: 403 Forbidden Try again or attach a new file.

Chrome Console show:

document-register-element.node.js:1296 [Deprecation] document.registerElement is deprecated and will be removed in M73, around March 2019. Please use window.customElements.define instead. See https://www.chromestatus.com/features/4642138092470272 for more details.
qe @ document-register-element.node.js:1296
15:05:36.364 dropzone.js:1371 XHR finished loading: OPTIONS "http://np.lilu.red:96/api/v4/projects/55/wikis/attachments".
s.submitRequest @ dropzone.js:1371
s.uploadFiles @ dropzone.js:1367
s.processFiles @ dropzone.js:1161
s.processFile @ dropzone.js:1147
s.processQueue @ dropzone.js:1140
(anonymous) @ dropzone.js:1004
setTimeout (async)
s.enqueueFile @ dropzone.js:1002
(anonymous) @ dropzone.js:981
accept @ dropzone.js:153
s.accept @ dropzone.js:959
s.addFile @ dropzone.js:973
(anonymous) @ dropzone.js:572
15:05:36.391 np.lilu.red:96/api/v4/projects/55/wikis/attachments:1 POST http://np.lilu.red:96/api/v4/projects/55/wikis/attachments 403 (Forbidden)
15:05:36.413 XHR failed loading: POST "http://np.lilu.red:96/api/v4/projects/55/wikis/attachments".

Results of GitLab environment info

Expand for output related to GitLab environment info

System information
System:		Ubuntu 16.04
Current User:	git
Using RVM:	no
Ruby Version:	2.5.3p105
Gem Version:	2.7.6
Bundler Version:1.16.6
Rake Version:	12.3.1
Redis Version:	3.2.12
Git Version:	2.18.1
Sidekiq Version:5.2.3
Go Version:	unknown
GitLab information
Version:	11.6.1
Revision:	598c5a7
Directory:	/opt/gitlab/embedded/service/gitlab-rails
DB Adapter:	postgresql
URL:		http://np.lilu.red:96
HTTP Clone URL:	http://np.lilu.red:96/some-group/some-project.git
SSH Clone URL:	git@np.lilu.red:some-group/some-project.git
Using LDAP:	no
Using Omniauth:	yes
Omniauth Providers:
GitLab Shell
Version:	8.4.3
Repository storage paths:

• default: /var/opt/gitlab/git-data/repositories Hooks: /opt/gitlab/embedded/service/gitlab-shell/hooks 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 >= 8.4.3 ? ... OK (8.4.3)
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: ... LDAP is disabled in config/gitlab.yml
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: ...
2/1 ... yes
14/5 ... yes
2/9 ... yes
14/10 ... yes
2/11 ... yes
2/14 ... yes
2/16 ... yes
2/18 ... yes
2/20 ... yes
37/22 ... yes
37/24 ... yes
2/25 ... yes
37/26 ... yes
37/28 ... yes
2/29 ... yes
37/30 ... yes
37/31 ... yes
37/32 ... yes
2/33 ... yes
38/34 ... yes
37/35 ... yes
37/36 ... yes
37/37 ... yes
2/38 ... yes
2/39 ... yes
2/40 ... yes
2/43 ... yes
2/50 ... yes
2/51 ... yes
37/52 ... yes
2/53 ... yes
2/54 ... yes
38/55 ... yes
Redis version >= 2.8.0? ... yes
Ruby version >= 2.3.5 ? ... yes (2.5.3)
Git version >= 2.18.0 ? ... yes (2.18.1)
Git user has default SSH configuration? ... yes
Active users: ... 19
Checking GitLab App ... Finished
Checking GitLab subtasks ... Finished