Ошибка HTTP-загрузки NSURLSession/NSURLConnection (kCFStreamErrorDomainSSL, -9860)

Я получаю сообщение об ошибке: Ошибка HTTP-загрузки NSURLSession/NSURLConnection (kCFStreamErrorDomainSSL, -9860)

Тот же код отлично работает в iPhone 8 с версией ОС 11.3.1, но в iPhone 6 с версией ОС 12.2 он не может получить ответ.

У меня уже есть ниже в plist

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>

Полный журнал:

Сбой TCP-соединения связан с ошибкой рукопожатия, но я не могу понять причину сбоя рукопожатия.

код :

Обратитесь к этому: stackoverflow.com/questions/30778579/

    +(void) fetchAndStoreAppConfig :(NSDictionary *)configuration mudulesToUpdate:(NSArray *)listItems withUser:(NSString *)email trigger:(NSString *)trigger {
    dispatch_queue_t SDKDataFetchQueue = dispatch_queue_create("SDKData Fetch Queue",NULL);
        dispatch_async(SDKDataFetchQueue, ^{

            NSMutableURLRequest *request = [APICommunication getRequest:configuration mudulesToUpdate:listItems withUser:email trigger:trigger];
            NSDictionary *jsonValues = [SdkUtil getResponseFromApi:request];
            NSLog(@"API response %@",jsonValues);
            });
    }

    +(NSMutableURLRequest * _Nullable) getRequest :(NSDictionary * _Nullable)config mudulesToUpdate:(NSArray * _Nullable)listItems withUser:(NSString * _Nullable)email trigger:(NSString * _Nullable)trigger{
        NSError *err;
        NSData *convertedData = [NSJSONSerialization dataWithJSONObject:listItems options:0 error:&err];
        NSString* entitiesStr = [[NSString alloc] initWithData:convertedData encoding:NSUTF8StringEncoding];
        NSString *entitiesStrtoURL = [entitiesStr stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLHostAllowedCharacterSet]];

        NSString *completeURLStr = [NSString stringWithFormat:[self getBaseFormate],[NSString stringWithFormat:@"%@",config[CONFIG_BASE_URL]],@"v4/sdk?",[NSString stringWithFormat:@"%@",config[CONFIG_APP_ID]],entitiesStrtoURL, email, trigger];
        NSLog(@"SDK API: %@",completeURLStr);
        return [self getGetRequest:config url:completeURLStr];
    }

+(NSMutableURLRequest*)getGetRequest:(NSDictionary *)config url:(NSString *)completeURLStr{
    NSURL *url = [NSURL URLWithString:completeURLStr];
    NSString *authStr = [self getAuthString:config];
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
    [request setURL:url];
    [request setHTTPMethod:@"GET"];
    [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
    [request addValue:authStr forHTTPHeaderField:@"authorization"];
    return request;
}

    +(NSDictionary *)getResponseFromApi:(NSMutableURLRequest *)request{
        __block BOOL done = NO;
        __block NSDictionary * jsonValues;
        NSLog(@"sdk getResponseFromApi: %@",request);
        NSURLSessionDataTask *dataTask = [[APICommunication getSession] dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
            if(data){
                NSError *errShow;
                jsonValues = [NSJSONSerialization JSONObjectWithData:data options:0 error:&errShow];
                NSLog(@"sdk JSon Description jsonvalues :%@",jsonValues.description);
                if(errShow == nil){
                    NSLog(@"sdk Error: %@",error);
                    done = YES;
                }
            }
            else{
                NSLog(@"sdk Error description :%@",error.debugDescription);
                [[NSNotificationCenter defaultCenter] postNotificationName:@"ErrorResponse" object:nil userInfo:nil];
            }
        }];

        [dataTask resume];

        while (!done) {
            NSDate *date = [[NSDate alloc] initWithTimeIntervalSinceNow:0.1];
            [[NSRunLoop currentRunLoop] runUntilDate:date];
        }
        return jsonValues;
    }