lvs问题求助，关于GND/VSSH的连接

刚用一个smic0.18的小设计学做LVS，发现pad上出现了如下问题：
CELL COMPARISON RESULTS

#######################
# ###
##INCORRECT#
# ###
#######################

Error:Connectivity errors.
LAYOUT CELL NAME:PSBI2F
SOURCE CELL NAME:PSBI2F
--------------------------------------------------------------------------------------------------------------
INITIAL NUMBERS OF OBJECTS
--------------------------
LayoutSourceComponent Type
--------------------------
Ports:1212
Nets:10176*
Instances:14358*MN (4 pins)
14160*MP (4 pins)
44R (2 pins)
87*D (2 pins)
------------
Total Inst:296129

NUMBERS OF OBJECTS AFTER TRANSFORMATION
---------------------------------------
LayoutSourceComponent Type
--------------------------
Ports:1212
Nets:6060
Instances:2323MN (4 pins)
3131MP (4 pins)
44R (2 pins)
77D (2 pins)
11SMN2 (4 pins)
11SMP2 (4 pins)
1111_invv (4 pins)
22_invx3v (4 pins)
22_nand2v (5 pins)
11_nor2v (5 pins)
55_sdw2v (4 pins)
22_sup2v (4 pins)
------------
Total Inst:9090

* = Number of objects in layout different from number in source.

**************************************************************************************************************
INCORRECT OBJECTS
**************************************************************************************************************

LEGEND:
-------
ne= Naming Error (same layout name found in source
circuit, but object was matched otherwise).

**************************************************************************************************************
INCORRECT NETS
DISC#LAYOUT NAMESOURCE NAME
**************************************************************************************************************
1Net VSSHVSSH
----------------------------------------------------
--- Incorrect Devices On This Net ---
(_sdw2b)(_sdw2v)
in1: X214/13in2: NET32
in2: 57in1: NET19
out1: Pout1: P
out2: VSSHout2: VSSH
Devices:
X214/M37(36.190,3.220)MN(N33)XI1/MN64MN(N33)
X214/M35(35.510,3.220)MN(N33)XI1/MN65MN(N33)
(_sdw2b)(_sdw2v)
in1: 28in2: NET22
in2: X214/13in1: NET32
out1: Pout1: P
out2: VSSHout2: VSSH
Devices:
X214/M36(35.510,39.240)MN(N33)XI1/MN42MN(N33)
X214/M38(36.190,39.240)MN(N33)XI1/MN43MN(N33)
X214/M18(13.925,73.605)MN(N33)XI0/MN16MN(N33)
g: VDDHg: VDDH
s: X214/15d: XI0/NET204
d: VSSHs: VSSH
b: GND** GND **
** VSSH **b: VSSH

看report应该是GND/VSSH（分别为内核和IO的地）识别有问题，在版图上它们不应该是连在一起的吗?请问像这种问题应该如何处理?请各位大侠指教

看下坐标点的well是不是连上来了~看起来像是没连到VSSH