I am having the same issue with a new 13" MBP (2020 M1 Big Sur) with a very lean system build. The problem is intermittent and difficult to reproduce, so the following may not be correct, but I think it might only be happening when both of the following are true: (a) upon wake from sleep and (b) when connected to my external display (an Apple Thunderbolt Display). As the Hiservices framework contains interfaces for internet config, I wonder if it could be related to switching network interface from wifi to Display Ethernet. I believe I have ruled out anything having to do with Date & Time, as I have "Set time zone automatically" turned off, together with the applicable Location access in Security & Privacy. Other things I had initially suspected that I have ruled out so far: Any apps with Accessibility access; SteerMouse Manager; Bartender 4; Carbon Copy Cloner's daemon; MS Exchange calendars; and Parallels 16.5. I also have an older 15" MBP (2018 Big Sur, Intel obviously) with a nearly identical software build and it does not have the issue. And a 13" MBA (2020 M1) which also does not have the issue. I am completely baffled and I am seriously considering erasing the 13" MBP and starting over with a fresh copy of Big Sur. I hope this helps and we can get to the bottom of it.

I spent a lot of time on this one, including multiple system reformats on my two macs: a 13" MBP (2020 M1) and a 15" MBP (2018 Intel i7). The problem is related to my use of an Apple Thunderbolt Display. If I use either of the computers without the ATD, the problem will never occur. But if I use either computer with the ATD, then eventually, randomly, it will occur.