AMF Login DuplicateSessionDetected

[radubirsan]

I am trying to create a proof of concept that will maybe get me a job in porting a AIR/Flex project. Trying to login to the server gives a Duplicate Session error. Here is the Royale code:

<mx:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
                   xmlns:mx="library://ns.apache.org/royale/mx"
                   width="600" height="400" initialize="setUp()" >
	<fx:Script>
		<![CDATA[
			import mx.rpc.AsyncToken;
            import mx.rpc.Responder;
            import mx.rpc.events.FaultEvent;
            import mx.rpc.events.ResultEvent;
			import mx.messaging.ChannelSet;
            import mx.messaging.channels.SecureAMFChannel;
            import mx.messaging.RoyaleClient;
            import mx.utils.UIDUtil;

			public var serverSTUB:String = "https://3cserver.3cnecectlab.net:9443"
			public function setUp():void
			{    
             var amfChannel:SecureAMFChannel = new SecureAMFChannel("my-secure-amf",serverSTUB + "/RiaService" + "/messagebroker/amflongpolling");
                amfChannel.requestTimeout = 10;
                channel.heartbeatInterval = 30000;
                RoyaleClient.getInstance().id = UIDUtil.createUID()//Math.round(Math.random())+ "9AB13FB-B51D-48F8-9EC9-2E06EC061EB5";
                channel.addChannel(amfChannel);  
			}
            public function login(e:MouseEvent=null):void{
                var r:Responder = new Responder(handleAuthenticateSuccess, handleLoginFault);
                var token:AsyncToken = channel.login('RBIRSAN', "Un1verge3Cst2020@");
                token.addResponder(r);
                trace("the token: ", token);  
            }
			private function handleAuthenticateSuccess(event:ResultEvent = null, token:Object = null):void
			{
				btn.label =  event.toString()	
			}
			
			private function handleLoginFault(event:FaultEvent = null, token:Object = null):void
			{
                btn.label =  event.toString()		
			}
		]]>
	</fx:Script>
	 <fx:Declarations>
         <mx:ChannelSet id="channel">
         </mx:ChannelSet>      
    </fx:Declarations>
 <mx:Button label="RemoteObject AMF Test" click="login(event)" id='btn'/>   
</mx:Application>

Here is my asconfig:

{
	"compilerOptions": {
		"targets": [
			"JSRoyale"
		],
		"source-path": [
			"src"
		]
	},
    "additionalOptions": "+configname=flex",
	"mainClass": "Main"
}

I am starting chrome like this bypass CORS errors:
chrome.exe --user-data-dir="C://chrome-dev-disabled-security" --disable-web-security --disable-site-isolation-trials

I get this response:
Duplicate HTTP-based FlexSession error: A request for FlexClient '585E2208-67F8-C428-0452-65840DD101A8' arrived over a new FlexSession 'ECD144ED710A291AE3E5C1D17560B501', but FlexClient is already associated with FlexSession '42A03B06B6FA9FED2AC03F7B3E14DB73', therefore it cannot be associated with the new session.

Loging at network trafic I see 3 requests all with diferent JSSESSIONID:

Any help in solving this is much appreciated, thank you