My phone is a 1 month old Nokia 1 with Android 8.1.0. I often set and remove a screen lock PIN. The most recent time I tried to set a PIN it failed and there is no PIN set (Screenlock None). If I tap this to set a PIN, I get a screen saying 'Re-enter your PIN'. As I have not got one, there is no way to get past this screen. This happened once before, and the only cure I found was to do a factory reset. As the issue has now recurred, I need to find a better solution.