Currently happening on and off for me, for the past hour or so.
Unable to access the network
ERR_NETWORK_CHANGED
Should we be worried?
I'm assuming you're using Chrome as that is a Chrome error. It's on your side and means that your network, well, changed. Could be that your WiFi disconnected for a short period of time, that your WiFi was busy connecting to a network, that the LAN cable came loose and reconnect, etc. This has nothing to do with the forum though.