protel自動佈線會出現:

No Keepout has been defined on this board.
Please define the board's Keepout region and try again.

這段文字視窗,而無法自動佈線,請問為什麼會出現這段文字視窗ㄋ
是哪邊設定錯誤? 請大大幫助@@感恩