Invalid app lock 'security keeps stopping'

[OnurAkbas]

When I try to use the setting button in AppLock menu it closes the settings and shows 'security keeps stopping' error.
here's the bug report (attachment)
miui: 10.2.3.0 stable mi8Se

 

[Igor Eisberg]

Stable V10.2 is no longer supported, V10.3 are being gradually rolled out to the devices.
Either wait for a Stable V10.3 for Mi 8 SE or you can move to Weeklies.