Getting Below errors when trying to access Juniper router

[mandarp22]

I tried :

./junos_exporter -ssh.targets=192.168.1.1 -ssh.user=user_name -ssh.password=Password.1!

Errors while using password:
INFO[0000] Starting JunOS exporter (Version: 0.12.4)
INFO[0000] Listening for /metrics on :9326 (TLS: false)
ERRO[0007] Could not connect to 192.168.1.1: could not connect to device: ssh: handshake failed: ssh: unable to authenticate, attempted methods [none password], no supported methods remain

Errors while using key:
ERRO[0006] Could not connect to 192.168.1.1: could not connect to device: ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain
ERRO[0012] Could not connect to 192.168.1.1: could not connect to device: ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain