portainer: Unable to load Dashboard data using unix:// (local)

Description

When deploying portainer and opening the portainer home page after have registered the admin password I receive the following error message:

Unable to load Dashboard data.

From this point no containers informations are displayed.

Steps to reproduce the issue:

1. docker run -d -v /var/run/docker.sock:/var/run/docker.sock -p 9000:9000 portainer/portainer
2. Register the admin password
3. When redirected to the main page the error message is displayed at the top right corner.

The same happens using --privilege arg.

Technical details:

• Portainer version: 1.11.1
• Portainer Docker image tag: latest
• Target Docker version: 1.12
• Platform (windows/linux): Ubuntu Linux 4.4.0-53-generic #74~14.04.1-Ubuntu SMP Fri Dec 2 03:43:31 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
• Browser: Chrome

** Logs from portainer container:

2017/01/09 09:05:29 Starting Portainer on :9000
2017/01/09 09:05:37 http error: User not found (code=404)
2017/01/09 09:05:50 http error: Endpoint not found (code=404)
2017/01/09 09:05:51 http error: Endpoint not found (code=404)

** Logs from the browser console:

Failed to load resource: the server responded with a status of 500 (Internal Server Error)