Logs are not collected and charts are not pictured

[ant1freeze]

I have some Antmain L3+ in the same local network with server of Minera.
I can see its hashrate, temp, frequency etc, but there is no graph in the field of chart (for example, Local Hashrate History). Of course I was waiting more than 10 min, but i see only straight line at 0 Mh/s instead near 500 Mh/s.
Also i try to start miner realtime log, but it's clean.

[michelem09]

Charts are available only for local miners not networked ones.