Hello everyone, when I do this command

sudo ddclient -daemon=0 -debug -verbose -noquiet

And then I got the following error:
DEBUG: get_ip: using ip, ip reports (undefined)
WARNING: unable to determine IP address

the ddclient.conf:
# check every 60 seconds
daemon=60
# log update msgs to syslog
syslog=yes
# mail all msgs to root
mail=root
# mail failed update msgs to root
mail-failure=root
# record PID in file.
pid=/var/run/ddclient.pid
# use ssl-support. Works with ssl-library
ssl=yes
# get ip from server.
use=web, web=checkip.dynu.com/, web-skip='IP Address'
# default server
server=api.dynu.com
# default login
login=dhia2020
# default password
password=mypass
protocol=dyndns2
dhia2020.freeddns.org