Configuration of keycloak server in performance testsuite fails

keycloak/testsuite/performance$ mvn clean install
...
     [exec] {
     [exec]     "outcome" => "failed",
     [exec]     "failure-description" => "WFLYCTL0216: Management resource '[
     [exec]     (\"subsystem\" => \"modcluster\"),
     [exec]     (\"proxy\" => \"default\"),
     [exec]     (\"load-provider\" => \"simple\")
     [exec] ]' not found",
     [exec]     "rolled-back" => true
     [exec] }