Template Admin Error
### Summary
Error 500 at /admin
### Steps to reproduce
- Upgrade to latest version
- Click on admin dashboard
- Raise a 500 error
### What is the current *bug* behavior?
Error 500: unable to load dashboard
### What is the expected *correct* behavior?
Show the admin dashboard
### Relevant logs
`sudo gitlab-ctl tail`
<details>
<summary> Relevant logs </summary>
<pre>
```
==> /var/log/gitlab/gitlab-rails/production.log <==
Completed 500 Internal Server Error in 1710ms (ActiveRecord: 93.8ms)
ActionView::Template::Error (undefined method `becomes' for nil:NilClass):
174: %h4 Latest projects
175: - @projects.each do |project|
176: %p
177: = link_to project.full_name, [:admin, project.namespace.becomes(Namespace), project], class: 'str-truncated-60'
178: %span.light.float-right
179: #{time_ago_with_tooltip(project.created_at)}
180: .col-md-4
```
</pre>
### Details of package version
<summary>Gitlab Community Edition on Debian 9
gitlab-ce 11.6.0-ce.0 amd64 GitLab Community Edition (including NGINX, Postgres, Redis)
</summary>
### Environment details
* Operating System: `Debian 9`
* Installation Target, remove incorrect values:
* VPS
* Installation Type, remove incorrect values:
* Upgrade from version `11.5`
* Is there any other software running on the machine: `No`
* Is this a single or multiple node installation? Single
* Resources
* CPU: `8GB`
* Memory total: `200`
### Fixing it:
edit `/opt/gitlab/embedded/service/gitlab-rails/app/views/admin/dashboard/index.html.haml`
l.177 Replace
```
= link_to project.full_name, [:admin, project.namespace.becomes(Namespace), project], class: 'str-truncated-60'
```
by
```
= link_to project.full_name, [:admin, project.becomes(Namespace), project], class: 'str-truncated-60'
```
issue