Incorrectly closed header results in not helping IllegalArgumentException with null message

[standalone@localhost:9990 /] /core-service=management/security-realm=bbb:add(){allow-resource-service-restart=true)
{
    "outcome" => "failed",
    "failure-description" => "java.lang.IllegalArgumentException:null"
}

14:20:12,440 ERROR [org.jboss.as.controller.management-operation] (management-handler-thread - 10) WFLYCTL0403: Unexpected failure during execution of the following operation(s): [{
    "address" => [
        ("core-service" => "management"),
        ("security-realm" => "bbb")
    ],
    "operation" => "add",
    "operation-headers" => {
        "allow-resource-service-restart" => "true)",
        "caller-type" => "user",
        "access-mechanism" => "NATIVE"
    }
}]: java.lang.IllegalArgumentException
	at org.jboss.dmr.StringModelValue.asBoolean(StringModelValue.java:157)
	at org.jboss.dmr.ModelNode.asBoolean(ModelNode.java:267)
	at org.jboss.as.controller.ModelControllerImpl.internalExecute(ModelControllerImpl.java:346)
	at org.jboss.as.controller.ModelControllerImpl.lambda$execute$1(ModelControllerImpl.java:240)
	at org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:193)
	at org.jboss.as.controller.ModelControllerImpl.execute(ModelControllerImpl.java:240)
	at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler.doExecute(ModelControllerClientOperationHandler.java:217)
	at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler.access$400(ModelControllerClientOperationHandler.java:137)
	at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1$1.run(ModelControllerClientOperationHandler.java:161)
	at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1$1.run(ModelControllerClientOperationHandler.java:157)
	at org.wildfly.security.auth.server.SecurityIdentity.runAs(SecurityIdentity.java:212)
	at org.jboss.as.controller.AccessAuditContext.doAs(AccessAuditContext.java:185)
	at org.jboss.as.controller.remote.ModelControllerClientOperationHandler$ExecuteRequestHandler$1.execute(ModelControllerClientOperationHandler.java:157)
	at org.jboss.as.protocol.mgmt.ManagementRequestContextImpl$1.doExecute(ManagementRequestContextImpl.java:70)
	at org.jboss.as.protocol.mgmt.ManagementRequestContextImpl$AsyncTaskRunner.run(ManagementRequestContextImpl.java:160)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)
	at org.jboss.threads.JBossThread.run(JBossThread.java:320)