Import watch-only address to 0.18 core wallet, addresses missing I am running new bitcond server

$bitcoin-cli importaddress '32om7Xx7GnwxkiAQjpp3hhayDX4mSNLmR1' 'label' false
$


it seems added.

Then I try to list all addresses in wallet it return empty list.

$bitcoin-cli listaddressgroupings
[
]


here my bitcoind.conf

server=1
rpcuser=uname
rpcpassword=pass
rpcallowip=127.0.0.1
rpcbind=127.0.0.1
rpcport=18332
daemon=1
addresstype=p2sh-segwit

$ bitcoin-cli listwallets
[
  ""
]
You're using on incorrect bitcoin-cli method to list your addresses.

The command you're looking for is:

bitcoin-cli listreceivedbyaddress 0 true


The 0 parameter means you're requesting information on any address and the true flag means you want empty addresses included.

The original command you were attempting, listaddressgroupings, is described here.