Part of the fix for WFARQ-35 exposed an issue with reading deployment resources on some webservices deployments, WFLY-9752. A workaround would be to read only the undertow subsystem portion of the deployment model.
relates to
WFARQ-35ManagementClient assumes children of /deployment=foo resources are not runtime-only
Resolved
WFLY-9752Failure to read deployment resource on some WS deployments