Orphaned copper starting from : Region (0 hole(s)) Top Layer
老师，这个错误是什么意思？？
Net +3.3V is broken into 1 sub-nets. Routed To 100.00% Subnet : R148-2 R150-2 R149-2 R152-2 R147-2 R151-2 R153-2 R154-2 R39-2 R3-2 R7-2 U34-54 C58-2 J8-1 C56-2 U34-42 R57-1 R8-2 C52-2 U34-13 C55-2 U34-12 U34-71 C37-1 U10-2 C54-2 C50-2 U29-8 R34-2 C69-1 X3-4 R1-2 U10-2 R135-2 R136-2 R137-2 R139-2 R138-2 R141-2 R140-2 R142-2 C88-2 R63-2 U34-28 U34-19 U34-10 J23-1 C59-2 R133-2 R20-2 R9-2 U4-8 U6-8 R16-2 R12-2 C25-2 C17-2 J23-2 U41-4 U1-8 C57-2 C51-2 U34-96 C42-2 C85-2 R159-2 R54-2 RP4-5 C53-2 U34-84 U12-16 RP4-6 RP4-8 RP4-7 Orphaned copper starting from : Region (0 hole(s)) Top Layer
都已经连接完了，错误检查出现这个错误