RRD graphs are blank

[xibalba]

Hello everyone,
On one of my client's routers the RRD graphs are no longer showing. I tried modifying some information on the WAN/LAN configuration pages to see if it would kickstart the rrd graphs again, but I was unsuccessful. Can anyone provide any recommendations on how to get the RRD graphs to work again?
Thanks in advance

[ldillon]

This is pure guess, but under Status -> RRD Graphs -> Settings, there's a "Enables the RRD graphing backend." check box.

I'd try un-checking it, saving setting, re-enabling it, save settings.

This is kind of a "dumb GUI trick", but things like this sometimes work with GUI's.

I have a bit of trouble finding where all of the logs are kept, but checking them is never a bad idea.