This issue happened to me twice on the same device when I powered it off (iPhone XR). I was able to fix it both time by force restarting it and normal restarting it multiple times (above 25 times). and it worked. I was desperate and just kept repeating until the phone worked. the first time the apple restore page showed up 7 times however the second time it showed only 1 time and both times was on its side it also started up and the apple logo stayed for longer than normal [don't do anything if this happens just wait and it should work. This issue seems to happen with the IOS 14.2 BETA (18B5083a)