Cobalt:0.0.9 Cannot decrypt data

[guilherme-gmonteiro]

Hello, i'm trying to create a new application using cobalt just created a rest endpoint to test the code provided on the example, that its exactly like this:

    @GetMapping("getqr")
    private Boolean getQRCode(){
        Whatsapp.webBuilder() // Use the Web api
                .newConnection() // Deserialize the last connection, or create a new one if it doesn't exist
                .unregistered(QrHandler.toTerminal()) // Print the QR to the terminal
                .addLoggedInListener(api -> System.out.printf("Connected: %s%n", api.store().privacySettings())) // Print a message when connected
                .addDisconnectedListener(reason -> System.out.printf("Disconnected: %s%n", reason)) // Print a message when disconnected
                .addNewChatMessageListener(message -> System.out.printf("New message: %s%n", message.toJson())) // Print a message when a new chat message arrives
                .connect() // Connect to Whatsapp asynchronously
                .join() // Await the result
                .awaitDisconnection(); // Wait
        return true;
    }

after i read the QR Code it get's me the following error:

java.util.concurrent.CompletionException: java.lang.NullPointerException: Cannot invoke "it.auties.whatsapp.model.newsletter.NewsletterMetadata.invite()" because the return value of "it.auties.whatsapp.model.newsletter.Newsletter.metadata()" is null
	at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:315)
	at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:320)
	at java.base/java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:722)
	at java.base/java.util.concurrent.CompletableFuture$Completion.exec(CompletableFuture.java:483)
	at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:387)
	at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1312)
	at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1843)
	at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1808)
	at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:188)
Caused by: java.lang.NullPointerException: Cannot invoke "it.auties.whatsapp.model.newsletter.NewsletterMetadata.invite()" because the return value of "it.auties.whatsapp.model.newsletter.Newsletter.metadata()" is null
	at it.auties.whatsapp.implementation.SocketHandler.queryNewsletterMessages(SocketHandler.java:632)
	at it.auties.whatsapp.implementation.StreamHandler.onNewsletters(StreamHandler.java:1187)
	at it.auties.whatsapp.implementation.StreamHandler.parseNewsletters(StreamHandler.java:1176)
	at java.base/java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:718)
	... 6 more

anyone can help me with that?