guard let authManager = self.authManager else {
            fatalError("self.authManager is not valid")
        }
        guard let authState = authManager.authState() else {
            fatalError(".authState() is not valid")
        }
        guard let lastTokenResponse = authState.lastTokenRepsonse else {
            fatalError(".lastTokenRepsonse is not valid")
        }
        guard let accessToken = lastTokenResponse.accessToken else {
            fatalError(".accessToken is not valid")
        }