Help please | Rddtool no grap

[kurosaki]

Hello friends how are you? I will start by telling you that I am new to cacti, I do not know much about this software and I have a problem. I would like to be able to monitor my devices using ping, it seems that they connect and detect my devices correctly, my problem is that I have some equipment fortinet, my server reaches them with a latency of 0.423 is an example, I use the Unix ping latency graph template, when I see the graph of my Unix ping latency sometimes it's fine and sometimes it's not, it sends me latencies of 400 milliseconds or sometimes It goes almost to a thousand and 1000 does not match and when I add all the graphics to the tree to be able to see all the graphic devices, it is even worse. I don't know if I explained myself and someone could help me to solve my problem. If possible, I'll attach an image tomorrow since I can't connect to the Internet freely at work. Thank you very much in advance, regards.

[TheWitness]

Make sure your poller is running and that your log is free from errors, and that the poller user has permissions to the directory.