Port Aggregation Draw error on rev:8276

After svn update and ./discovery.php -u we are unable to view aggregated port graphs.

For instance the "Peering & Transit" built in port group is enabled and has been in use for sometime.

We are able to select "Ports"->"Peering & Transit" and view the 4 graph overview of the aggregate which includes the 4 graph view of all the interfaces.

However, we then for instance click the first graph denoting the 24 hour view to view the larger version, all graphs show "DRAW ERROR".

So "http://observium/iftype/type=peering%2Ctransit/" works, but "https://observium/graphs/type=multi-port_bits_separate/to=1480613825/id=6517%2C4557%2C4556%2C4555/from=1480527425/" does not draw graphs...

This is true for all built in and custom port groups we have configured.