ubuntu系统设置密码报错 Module is unknown

# cd /etc/pam.d
# cat common-password  | egrep -v "#|^$"

password        [success=1 default=ignore]      pam_unix.so sha512 shadow nullok try_first_pass remember=10
password        requisite                       pam_deny.so
password        required                        pam_permit.so
password        requisite                       pam_pwquality.so try_first_pass local_users_only retry=5 difok=3 minlen=8 minclass=3 enforce_for_root