Error message

The following error message appears due to an unknown host exception:
Caused by: java.net.UnknownHostException:iZ25ax7xuf5Z

Solution

iZ25ax7xuf5Z indicates the current host name. Check whether the IP address and name of the current host are specified in /etc/hosts. If not, specify the IP address and name, for example, 192.168.1.10 iZ25ax7xuf5Z.