The network administrator is adding a new N1Kv to the vCenter， however， the administrator does not see the new switch under the networking tab of vCenter.
The administrator issues the following command on the VSM to troubleshoot：
VSM# show svs connections
connection VC：
ip address： 10.10.10.30
remote port： 80
protocol： vmware-vim https
certificatE. default
datacenter namE. DC1
DVS uuiD. 67 32 30 50 a6 d2 49 64-9e 1c 5f 49 e3 af 55 99
config status： Disabled
operational status： Disconnected sync status： -
version： -
When attempting to fix the issue， the following error is seen：
VSM-PRI-188# conf
VSM-PRI-188（config）# svs connection VC
VSM-PRI-188（config-svs-conn）# connect
ERROR： [VMWARE-VIM] Extension key was not registered before its use
What is the cause of the error？（）
