House iten null

[Kayan]

i have make a house, configured and after i open forgotten

and are this error in console

WARNING: IOMapSerialize::loadTile(). NULL item at ( 00680 / 00584 / 007 ). type
= 6447, sid = 1, pid = 0
WARNING: IOMapSerialize::loadTile(). NULL item at ( 00683 / 00581 / 007 ). type
= 6253, sid = 1, pid = 0
WARNING: IOMapSerialize::loadTile(). NULL item at ( 00683 / 00584 / 007 ). type
= 1754, sid = 1, pid = 0
WARNING: IOMapSerialize::loadTile(). NULL item at ( 00683 / 00585 / 007 ). type
= 1755, sid = 1, pid = 0
WARNING: IOMapSerialize::loadTile(). NULL item at ( 00685 / 00584 / 007 ). type
= 1754, sid = 1, pid = 0
WARNING: IOMapSerialize::loadTile(). NULL item at ( 00685 / 00585 / 007 ). type
= 1755, sid = 1, pid = 0

Someone can help me?

i have delete this house and configed again, but this error don't leave ;/