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java.lang.Throwable: 	at org.gjt.mm.mysql.Connection.isClosed(Connection.java:623)	at com.solarmetric.kodo.impl.jdbc.datasource.ConnectionImpl.isClosed(ConnectionImpl.java:366)	at com.solarmetric.kodo.impl.jdbc.datasource.DataSourceImpl.clean(DataSourceImpl.java:219)	at com.solarmetric.kodo.impl.jdbc.datasource.DataSourceImpl.findConnection(DataSourceImpl.java:232)	at com.solarmetric.kodo.impl.jdbc.datasource.DataSourceImpl.getConnection(DataSourceImpl.java:161)