Unable to access the configuration of current build issue

Have you tried other networks? Or killed your Wifi and used your mobile network to connect? Although it's rare, your service provider could have pushed out an update to your modem for traffic/port shaping that introduced blocked ports etc,

your 0x20 prefix typically refers to networks, 82  indicates connection related context, e.g. timeout or packet/frame rejection, etc, which prompted the comment above, a long shot without knowing your internet access setup, but worth checking.