I have not found a workaround yet.

The customer is using OpenAPI to generate the model that will be used to accept requests to DM. OpenAPI appears to rely on spring-web. 

It looks like it has something to do with a missing class but I haven't figured out which one yet

https://stackoverflow.com/questions/24352967/spring-boot-errorjava-lang-arraystoreexception-sun-reflect-annotation-typenotp

https://topic.alibabacloud.com/a/deep-spring-boot-how-to-troubleshoot-javalangarraystoreexception_1_27_20183659.html

Create a new RHDM and KIE server on eap 7.2

Create a new blank maven project and add the dependency org.springframework.boot:spring-boot-starter-web:2.1.6.RELEASE (project-with-springweb.zip attached)

Build and install the maven project to your local repo

Create a new project in RHDM and add the maven project to it as a dependency (blank-rhdm-project.zip attached)

Build and deploy the project

send a request to the container instance (exampleRequest.txt attached)

see error in response and in server log (server.log attached)