ChartCollector Collector connection_ping_min error: min() arg is an empty sequence

[TommyJerryMairo]

I'm using Version: 0.7.1 r4206, Python 3.7.3 and an error keeps coming out from logs: ChartCollector Collector connection_ping_min error: min() arg is an empty sequence This might be a result of the lack of edge condition checks in the corresponding code, where the built-in min() is sensitive to zero-length lists.