java.lang.NullPointerException

  org.mariadb.jdbc.MariaDbStatement.cacheMoreResults (MariaDbStatement.java:208)

  org.mariadb.jdbc.MariaDbStatement.execute (MariaDbStatement.java:284)

  org.mariadb.jdbc.MariaDbClientPreparedStatement.execute (MariaDbClientPreparedStatement.java:148)

  com.zaxxer.hikari.pool.ProxyPreparedStatement.execute (ProxyPreparedStatement.java:44)

  com.zaxxer.hikari.pool.HikariProxyPreparedStatement.execute (Unknown source)

  org.skife.jdbi.v2.SQLStatement.internalExecute (SQLStatement.java:1328)

  org.skife.jdbi.v2.Query.fold (Query.java:173)

  org.skife.jdbi.v2.Query.list (Query.java:82)

  org.skife.jdbi.v2.sqlobject.ResultReturnThing$IterableReturningThing.result (ResultReturnThing.java:255)

  org.skife.jdbi.v2.sqlobject.ResultReturnThing.map (ResultReturnThing.java:48)

  org.skife.jdbi.v2.sqlobject.QueryHandler.invoke (QueryHandler.java:45)

  org.skife.jdbi.v2.sqlobject.SqlObject.invoke (SqlObject.java:175)

  org.skife.jdbi.v2.sqlobject.SqlObject$2.intercept (SqlObject.java:92)

  org.skife.jdbi.v2.sqlobject.CloseInternalDoNotUseThisClass$$EnhancerByCGLIB$$444da1cd.getContactCluster (Unknown source)