Weathermap not showing graph some time

[Sophanith]

Hi All,

I am a new installer/learner for Cacti with Weathermap plugin installation. Most of graphs are running fine with statistic but I noticed that some map on weathermap are working/showing and some are not working(it show only brown/black color but have data). I have check target of data source is OK with data graph as normal.

Here are the cacti log:

08/08/2014 04:01:57 PM - WEATHERMAP: Poller[0] WARNING: [Map 3] ANN: ReadData: LINK AEON, target: /usr/share/cacti/rra/mx-pnhcc-cr01_traffic_in_4962.rrd on config line 294 of /usr/share/cacti/plugins/weathermap/configs/ANN had no valid data, according to WeatherMapDataSource_rrd
08/08/2014 04:01:57 PM - WEATHERMAP: Poller[0] WARNING: [Map 3] ANN: ReadData: LINK SR-Total-Vatanak, target: /usr/share/cacti/rra/mx-repsr-pe01_traffic_in_5417.rrd on config line 286 of /usr/share/cacti/plugins/weathermap/configs/ANN had no valid data, according to WeatherMapDataSource_rrd

And at the same time I observed rrd file data source are not updating
Note: I run every 5 minutes for poller.

I tired to work around but still have no clue

Please if you have any idea please help me, or let me know if you need any further clarification.

Thanks,