[tor-relays] Something strange noticed on tor metrics

Hello,

So today I w as checking my relay on tor metrics https://metrics.torproject.org/networksize.html

I noticed something strange, according to the graph, the number of bridges seems to have suddenly completely dropped to zero (the bridges line just after “2018-07”) and now slowly climbing back up. I am wondering did something happen that knocked all of the bridges offline? It seemed strange so I just thought I would report.

Thank you.