Adding smallrye mutiny dependency in JBoss EAP 7.3 - reactive-programming

Question

I have a microprofile application using Smallrye Mutiny, which I need to deploy on JBoss EAP 7.3. I have applied JBoss EAP XP patch to enable microprofile features. I have also added mutiny jar as a module in EAP.
Below are the module file contents
<?xml version="1.0" encoding="UTF-8"?>
<module xmlns="urn:jboss:module:1.1"
name="io.smallrye.reactive.mutiny">
<resources>
<resource-root path="mutiny-0.9.0.jar" />
</resources>
<dependencies>
<module name="org.reactivestreams" />
</dependencies>
</module>
And the module.xml for reactivestreams is
<?xml version="1.0" encoding="UTF-8"?>
<module xmlns="urn:jboss:module:1.1" name="org.reactivestreams">
<resources>
<resource-root path="reactive-streams-1.0.3.jar" />
</resources>
</module>
However in my application I'm getting the below Exception
Failed to define class io.smallrye.mutiny.Multi in Module "deployment.SampleReactive.war" from Service Module Loader: java.lang.NoClassDefFoundError: Failed to link io/smallrye/mutiny/Multi (Module "deployment.SampleReactive.war" from Service Module Loader): org/reactivestreams/Publisher
How can I configure JBoss EAP to work with reactive applications built using Microprofile? Any help is appreciated.
Edit: I have managed to get the app working on EAP 7.3. But now I am facing a different issue.
App has REST Apis which emit Uni and Multi. The REST API produces Json. But when I run this program in EAP, I see and object as the response instead of a JSON.
It seems that EAP is not able to convert Uni and Multi to JSON.
Is there any library that I need to add for this to work?