Camund-platform-7-mail and spring-boot: Error Could not parse BPMN process. Errors: * One of the attributes ‘class’, ‘delegateExpression’, ‘type’, or ‘expression’ is mandatory on serviceTask is happening again with 7.20

Dowloaded the “Camunda Showcase for Spring Boot & Keycloak Identity Provider” and added the dependencies for sprung-boot as documented, the server seems to start ok and give the message: "NCT-01004 Discovered provider for connector id ‘mail-send’ but trying to upload a BNMP from Modeler I receive the above message.
Any help would be appreciated.
Regards,
Giovanni

Would you share your BPMN Diagram or let me know more with screenhsots what exactly you want to acheive?

Sure: it is very simple: I want to send an Email to the approver.
Please see attached BPMN.
REST-driven-AssignRole.bpmn (9.2 KB)

I suspect a collision between the spring-boot setup if the Identity Provider, as both work flawlesy in separated environments.
Regards,
Giovanni