Looks like you have intermittent DB communication issue. Is the issue reproducible every time you create a template? Do you have DB server behind firewall or on a different network?
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Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException:
Communications link failure
The last packet successfully received from the server was 203 608 milliseconds
ago. The last packet sent successfully to the server was 0 milliseconds ago.
