Grafana services view stuck to "Fetching Data..."

[algorys]

WebUI display the Grafana in Host view but inside the Service view grafana tab is stuck on Fetching Data...

Config:

Ubuntu 16.04

alignak==0.2 (current develop)
alignak-backend==0.8.17
alignak-backend-client==0.9.0
alignak-backend-import==0.9.0
alignak-module-backend==0.5.0
alignak-module-logs==0.5.1
alignak-notifications==0.3.1
alignak-webui==0.8.3.4

The WebUI logs display no errors, but in browser console I've the following:

On Host view there is no error in console.

[mohierf]

Should be fixed with the most recent version