The websocket connection to the server failed to establish iOS

Sendbird Chat UIKit iOS
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1

[Problem/Question]
// Detailed description of issue.
I am getting The websocket connection to the server failed to establish. everytime i try to connect to sendbird sdk iOS .

func connectToSendBird(onCompletion: @escaping (SendbirdChatSDK.User?, FoodAPIError?) -> Void) {
        guard let credentials = userSignUpInfo else {
            onCompletion(nil, nil)
            return
        }
        SendbirdChat.connect(userId: credentials.id, authToken: credentials.token, completionHandler: { user, error in
            guard error == nil else {
                self.analyticsManager.log(.errorOnDriverChat(
                    errorCode: String(error?.code ?? 0),
                    message: error?.localizedDescription ?? "",
                    context: "sendbird_connect",
                    userId: self.userId
                ))

                onCompletion(nil, self.asFoodAPIError(error: error))
                return
            }
            onCompletion(user, nil)
        })
    }

// What version of the SDK are you using?
4.5.0

[Reproduction Steps]
every time i connect to send bird sdk

[Frequency]
// How frequently is this issue occurring?
every time

[Current impact]
// How is this currently impacting your implementation?
Not able send and recieve driver chat.