a property from a singleton is nil when checkin is value.
calling this function from viewDidLoad like this

Task {
        do {
            try await CXOneChat.shared.connect(environment: .NA1, brandId: 1111, channelId: "keyID")
            self.checkForConfig()
        } catch {
            print(error.localizedDescription)
        }
    }

this connect function checks for several issues and load from network the config

 public func connect(environment: Environment, brandId: Int, channelId: String) async throws {
    self.environment = environment
    self.brandId = brandId
    self.channelId = channelId
    try connectToSocket()
    channelConfig = try await loadChannelConfiguration()
    generateDestinationId()
    generateVisitor()
    if customer == nil {
        customer = Customer(senderId: UUID().uuidString, displayName: "")
        try await authorizeCustomer()
    } else if authorizationCode.isEmpty{
        try await reconnectCustomer()
    } else {
        try await authorizeCustomer()
    }
}

this work ok the self.checkForConfig does some stuff with config in singleton object.
after tapping a button and go for another ViewController. call this func

func loadThread() {
    do {
        if CXOneChat.shared.getChannelConfiguration()?.settings.hasMultipleThreadsPerEndUser ?? false {
            try  CXOneChat.shared.loadThreads()
        } else {
            
            try CXOneChat.shared.loadThread()
        }
    } catch {
        print(error)
    }
}

depending on the config call one or another config value load one or the function. in this case the getChannelConfiguration() is nil and call to loadThread().

func loadThread(threadId: UUID? = nil) throws {
    guard let config = channelConfig else {
        throw CXOneChatError.missingChannelConfig
    }

    let eventType = config.isLiveChat ? EventType.recoverLivechat : EventType.recoverThread
    guard let brandId = brandId else { throw CXOneChatError.invalidBrandId }
    guard let channelId = channelId else { throw CXOneChatError.invalidChannelId  }

    guard let id = getIdentity(with: false) else { throw CXOneChatError.invalidCustomerId }
    let retrieveThread = EventFactory.shared.recoverLivechatThreadEvent(brandId: brandId, channelId: channelId, customer: id, eventType: eventType, threadId: threadId)
    guard let data = getDataFrom(retrieveThread) else { throw CXOneChatError.invalidData }
    let string = getStringFromData(data)
    socketService.send(message: string)
}

here checks for he config in singleton object but throws error because config is nil.
my question is why is nil config in this check. the config is downloaded and store. but when get the values got a null value. Im missing some code here or what I is wrong with this.