[Observium] Memory graph not showing as intended.

Hello,

I just set up Observium on CentOS 7 and everything works great! Except for one thing. The Memory and Virtual memory graph on the dashboard for windows/linux servers won't draw. Switches work fine though.

When doing a debug I get this error message:

SQL[INSERT INTO `mempools-state` (`mempool_id`) VALUES ('5')] RUNTIME[0.00012898s] ERROR[Error in query: (1364) Field 'mempool_polled' doesn't have a default value]

I've been looking all over and can't find a resolution for this.

This is how it should look [http://i.imgur.com/NMkyhMB.png]

This is how it looks: [http://i.imgur.com/VEFSP1K.png]

Thank you for your help

Best regards Max