Crash every couple of weeks

[worldpeace-germany]

Hello,

my code to read RFID tags works basically fine, but every couple of weeks I need to power off/on the Arduino board to get it working again.

Forum discussion showed

https://forum.arduino.cc/t/code-stops-working-every-couple-of-months/1332535/8

where it has been claimed that a roll over of millis is causing this problem and that this is a bug in the library. Can you verify and fix this behavior?

Thanks.