no i didn't ive just upgrade the without wiping anything.
that may caused the issue ?
sure it could, but you can never be 100% sure unless you do some troubleshooting
IMO, the first step would be to go to recovery and in "mounts and storage" menu format boot,system,data and cache partitions,then go flash the rom
make sure to make a backup of your current rom (if you don't have the previous 7.1 backed up)