report an error

carry out iaas-pre-host.sh report an error Downloading packages: warning: /var/cache/yum/x86_64/7/iaas/packages/python-fixtures-3.0.0-2.el7.noarch.rpm: Header V4 RSA/SHA1 Signature, key ID 764429e6: NOKEY Public key for python-fixtures-3.0.0-2.el7.noarch.rpm is not installed Please Reboot or Reconnect the terminal How to fix it 从 Windows 版邮件<https://go.microsoft.com/fwlink/?LinkId=550986>发送