Browser on client - Webserver hosting tasseo - Graphite server

The http://webserver:5000 returns the list of dashboards as expected
Clicking on an example dashboard, brings up the dashboard, but only the loading circle appears, no graph.
In the stdout where I started foreman, I see 404's:
GET /graphite/render/?target=keepLastValue(icinga.webserver.load.load1)&from=-5minutes&format=json HTTP/1.1" 404

Yet, from the webserver:

curl "graphite/render/?target=keepLastValue(icinga.webserver.load.load1)&from=-5minutes&format=json"

Returns:
[{"target": "keepLastValue(icinga.webserver.load.load1)", "datapoints": [[0.08, 1440984240], [0.03, 1440984300], [0.38, 1440984360], [0.19, 1440984420], [0.19, 1440984480]]}]

What am I missing?