Hi team we are having the same problem form the ticket below, we have a asyc calls on our application and our Spring boot aplication is not working when we add the Keyclaok Spring boot Adapter 

Ticket
https://issues.jboss.org/browse/KEYCLOAK-3188

ERROR
"message": "Async support must be enabled on a servlet and for all filters involved in async request processing. This is done in Java code using the Servlet API or by adding \"<async-supported>true</async-supported>\" to servlet and filter declarations in web.xml.",

Can someone have a idea how we can fix it ? 

Thanks 
Francisco