# Troubleshooting

Source: https://docs.buzzvil.com/en/docs/buzzbenefit-ios/v6/troubleshooting
Platform: iOS
SDK major version: v6
Language: English (en)
Translation: AI-translated from Korean. Original: https://docs.buzzvil.com/docs/buzzbenefit-ios/v6/troubleshooting

## An error code appears

If a BuzzvilSDK method call fails, `Error` is passed to the `onFailure` callback. Use the error code table below to identify the cause and resolve the problem.

> ✏️  **Note**\
> The domain for errors generated by the Buzzvil SDK is `BuzzErrorDomain`.

| Error code                | Cause                                                                                                                                                                                | Resolution                                                              |
| ------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ----------------------------------------------------------------------- |
| `serverError`             | An error occurred on the Buzzvil server.                                                                                                                                             | Send the error code to your Buzzvil representative.                     |
| `clientError`             | The request did not meet the requirements. (For example, an ad was requested before the user logged in.)                                                                             | Check that the request arguments contain valid values.                  |
| `connectionTimeout`       | The network request timed out.                                                                                                                                                       | Check the network connection.                                           |
| `emptyResponse`           | The network response is empty. (For example, an ad request succeeded but returned zero ads.)                                                                                         | Send the error code to your Buzzvil representative.                     |
| `waitingForResponse`      | This error can occur if you request another preload while a preload request is already being processed for BenefitHub. Ad allocation still proceeds normally when this error occurs. | Check that you have not requested a duplicate preload.                  |
| `agePolicy`               | The user is younger than the minimum age allowed to receive ads under the platform policy.                                                                                           | Set the age to 15 or older during login.                                |
| `privacyPolicyNotGranted` | The user has not agreed to the privacy policy.                                                                                                                                       | Check that the user agreed to the privacy policy before requesting ads. |
| `unknown`                 | An unidentified error occurred.                                                                                                                                                      | Check for errors in the SDK integration and app build.                  |

The following example handles errors when requesting native ads.

**Swift**

```swift
let native = BuzzNative(unitId: "YOUR_NATIVE_UNIT_ID")

native.load(
  onSuccess: { nativeAd in
    // 할당된 광고가 있으면 호출됩니다.
  },
  onFailure: { error in
    guard let error = error as? BuzzError else {
      // BuzzErrorDomain에 속하지 않는 오류를 처리합니다.
      return
    }

    switch error {
      case .serverError:
        print("server error")
      case .clientError:
        print("client error")
      case .connectionTimeout:
        print("connection timeout")
      case .emptyResponse:
        print("empty response")
      case .waitingForResponse:
        print("waiting for response")
      case .agePolicy:
        print("age policy")
      case .privacyPolicyNotGranted:
        print("privacy policy not granted")
      case .unknown:
        print("unknown error")
      @unknown default:
        break
    }
  }
)
```

**Objective-C**

```objectivec
BuzzNative *native = [[BuzzNative alloc] initWithUnitId:@"YOUR_NATIVE_UNIT_ID"];
[native loadWithOnSuccess:^(BuzzNativeAd * _Nonnull nativeAd) {
  // 할당된 광고가 있으면 호출됩니다.
} onFailure:^(NSError * _Nonnull error) {
  if ([error.domain isEqualToString:BuzzErrorDomain]) {
    switch (error.code) {
      case BuzzErrorCodeServerError:
        NSLog(@"server error");
        break;
      case BuzzErrorCodeClientError:
        NSLog(@"client error");
        break;
      case BuzzErrorCodeConnectionTimeout:
        NSLog(@"connection timeout");
        break;
      case BuzzErrorCodeEmptyResponse:
        NSLog(@"empty response");
        break; 
      case BuzzErrorCodeWaitingForResponse:
        NSLog(@"waiting for response");
        break;
      case BuzzErrorCodeAgePolicy:
        NSLog(@"age policy");
        break;
      case BuzzErrorCodePrivacyPolicyNotGranted:
        NSLog(@"privacy policy not granted");
        break;
      case BuzzErrorCodeUnknown:
        NSLog(@"unknown error");
        break;
      default:
        break;
    }
  } else {
    // BuzzErrorDomain에 속하지 않는 오류를 처리합니다.
  }
}];
```