Done Unable to claim land

My claimed area seems to disappeared and I'm not able to create a new claim.

Code:

[System] [CHAT] You may claim up to 7978 more blocks.
[System] [CHAT] BASIC corner set! Use the Golden Shovel again at the opposite corner to claim a rectangle of land.  To cancel, put your Golden Shovel away.
[System] [CHAT] The new claimable block total of 225 will exceed your claimable block limit of 0. This action has been cancelled.
[System] [CHAT] The claim failed to be created due to : EXCEEDS_MAX_CLAIMABLE_BLOCKS.