cannot pair lamp

[dr-ni]

what is wrong here?
can you help?

Traceback (most recent call last):
File "hue_discover_pair_trust_alias.py", line 158, in
new_huelamp_pair_trust(new_huelamp_addresses)
File "hue_discover_pair_trust_alias.py", line 117, in new_huelamp_pair_trust
new_device_proxy.Pair()
File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 70, in call
return self._proxy_method(*args, **keywords)
File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 145, in call
**keywords)
File "/usr/lib/python3/dist-packages/dbus/connection.py", line 651, in call_blocking
message, timeout)
dbus.exceptions.DBusException: org.bluez.Error.AuthenticationTimeout: Authentication Timeout

[arch-user-france1]

It tried pairing with the lamp but the lamp didn't respond.