[db] last packet successfully received...

Check when and how this error happened:

Database exception: The last packet successfully received from the server was 68,061,011 milliseconds ago. The last packet sent successfully to the server was 68,061,012 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.

JDBC (doCall:58) JDBCConnector (execute:273) Statement failed