Sub reports on BonitaSoft 7.5.4

I migrated my BonitaSoft engine from version 7.3.3 to 7.5.4, but I have a process that generates a report from the Jasper connector, but after migrating my report with sub reports it gives the following error:

aused by: org.bonitasoft.engine.connector.ConnectorException: net.sf.jasperreports.engine.JRException: Errors were encountered when compiling report expressions class file: 1. java.sql.Connection cannot be resolved to a type value = ((java.sql.Connection)parameter_REPORT_CONNECTION.getValue()); //$JR_EXPR_ID=20$ <-----------------> 2. java.sql.Connection cannot be resolved to a type value = ((java.sql.Connection)parameter_REPORT_CONNECTION.getValue()); //$JR_EXPR_ID=20$ <-----------------> 3. java.sql.Connection cannot be resolved to a type value = ((java.sql.Connection)parameter_REPORT_CONNECTION.getValue()); //$JR_EXPR_ID=20$ <----------------->

How can I generate reports with sub reports in version 7.5.4 of BonitaSoft? It is possible?

I think this is likely to be the same issue as you report in your other post. Hopefully both will be fixed at the same time.