I have the V3 KE for 1 week and it was working perfectly, today when I tryed to print Iam getting this error
Warning key:2401 Unknown exception
Hello @eduardobaruch
Welcome to the Official Creality Forum…
We have a discussion about that error code here. 
Check this out and see if there is anything that would help.
I reset to factory and it is working again, maybe there are bugs on the firmware official version I update 2 days ago
Glad it’s working again… 
I’ve seen errors pop up on mine and others and after reboot or factory reset it doesn’t come back…
I had one come up earlier, I think it was 2396 temperature sensor out of range, I put this down to the printer being in the shed, at the bottom of the garden in the middle of winter, probably -2C. Quick power cycle and off she prints.
Ha Ha… 
That is one tough printer you got there… 