Apache Proxy 500 error or RPC serialization

I'm trying to proxy a GWT app running on my local Tomcat server through Apache use AJP but am getting 500 errors during RPC calls.

I simply have a standard entry in my httpd.conf file:

<Location /user/>

    ProxyPass ajp://localhost:9009/openmetadata-www-user-gwt/

</Location>

When I run the app directly on http://localhost:9090/openmetadata-www-user-gwt/ I have no problem, but when I go through the proxy, I can see the RPC call go through but then getting serialization errors while returning objects:

SEVERE: Exception while dispatching incoming RPC call
com.google.gwt.user.client.rpc.SerializationException: Type 'org.openmetadata.www.user.client.UserServiceException' was not assignable to 'com.google.gwt.user.client.rpc.IsSerializable' and did not have a custom field serializer.For security purposes, this type will not be serialized.: instance = org.openmetadata.www.user.client.UserServiceException: User not found

Tried with http proxy (and on standard ports) but same issue. Seem like an RPC serialization policy problem but not sure what to do. Any suggestion would be appreciated.

best

*K

--
You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group.
To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/Riz4QVHEzDoJ.
To post to this group, send email to google-web-toolkit@googlegroups.com.
To unsubscribe from this group, send email to google-web-toolkit+unsubscribe@googlegroups.com.
For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.