Default Wierd ext sdcard error when ive never had an sd card

Ive had my note 3 n9005 for a few months now without problems. I installed xnote and a few days later i started to get wierd errors about the external sd card not being found (ive never had an ext sd card in this phone) and also when wiping it says e: unknown volume

I dunno what os making this happen so any help would be greatly appreciated.

Sent from my SM-N9005 using XDA Free mobile app