game disconnects over night gives message to check if everything is plugged in correc

game disconnects over night gives message to check if everything is plugged in correctly. this happens almost every night that i try to sell from my bazaar. i cannot figure it out, it hasnt happened forever but has been happening more frequently lately. please if u have any suggestions or ideas that would help alot. i found the error code this time it says error code: ffxi09001 (-1). can someone please help me out.