Below error is coming randomly on jasperserver 7.5.1:
2024-04-03T18:09:10,405 ERROR GenericExceptionMapper,http-nio-8080-exec-236:69 - Unexpected error occurs java.lang.IllegalStateException: Received resultset tuples, but no field structure for them
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2084)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:286)
at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:432)
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:358)
at org.postgresql.jdbc.PgPreparedStatement.executeWithFlags(PgPreparedStatement.java:171)
at org.postgresql.jdbc.PgPreparedStatement.executeQuery(PgPreparedStatement.java:119)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96)
Currently we are using postgresql-9.4-1210.jdbc41.jar.