RRDTool Says: ERROR: Opening x.rrd No such file or directory - Creating Cacti Graphs

[Nadou21]

Hello everyone,

I'm surprisingly facing a problem with a cisco device which doesn't show any graphs, when I turned up the graphs on debug mode it says:

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"RRDTool Says: ERROR: opening '/var/www/html/rra/t_traffic_in_6.rrd': No such file or directory"

I couldn't straight away tell the cause, but what was obvious is that the ".rrd" files were not being created whenever a graph was created!
Another symptom worth mentioning is that my test device status was showing "unknown" instead if "up", yet the snmp/ping query was successful!

In the other topics they say that it could be caused by the poller not running or the permission of the RRA directory, but I don't think it's the case for me because other devices are being graphed.

I turned up the device on debug mode and it seems that the poller is running.

Does someone have an idea how to fix this error.
Thanks