如何解决无法扩展到test.zip（错误1-不允许操作）的问题？

Question

我需要压缩日志文件并通过电子邮件发送。我正在使用Objective-zip压缩文件。这是我的代码

-(void)mailLogFile {
    if ([MFMailComposeViewController canSendMail]) {
        NSDictionary *user = [[DBHelper getSharedInstance] getCurrentUser];
        NSString *propertyQuery = [NSString stringWithFormat:@"SELECT RecentActivityId,PropertyPIC,PropertyId,Message,IsSynced,ActivityTime,ErrorCode,ErrorMessage,ErrorData,EntityId,TableNames From RecentActivity ORDER BY ActivityTime desc"];
        NSArray *resultArry = [[DBHelper getSharedInstance] getRecordsBySQL:propertyQuery];

        NSLog(@"This is the eNVDS in Recent Activity:%@" ,resultArry);
        [[DBHelper getSharedInstance] AddLogFile:[NSString stringWithFormat:@"This is the eNVDS in Recent Activity:%@" ,resultArry]];
        NSPredicate *notsynced = [NSPredicate predicateWithFormat:@"IsSynced == 0 || IsSynced == %@",@"0"];
        NSArray *notsyncedenvds = [resultArry filteredArrayUsingPredicate:notsynced];
        NSLog(@"This is the eNVDS in Recent Activity which is not synced:%@" ,notsyncedenvds);
        [[DBHelper getSharedInstance] AddLogFile:[NSString stringWithFormat:@"This is the eNVDS in Recent Activity which is not synced:%@" ,notsyncedenvds]];

        NSString *documentsDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];

        NSString *WritableDBPath= [documentsDirectory stringByAppendingPathComponent:@"Logfile.txt"];
        NSString *path = [documentsDirectory stringByAppendingPathComponent:@"test.zip"];
        NSData *zipdata = [NSData dataWithContentsOfFile:path];
        NSData *data = [NSData dataWithContentsOfFile:WritableDBPath];

        OZZipFile *zipFile32= [[OZZipFile alloc] initWithFileName:path mode:OZZipFileModeCreate];
        //NSData *zipdata2 = [NSData dataWithContentsOfFile:zipFile32];
        OZZipWriteStream *stream= [zipFile32 writeFileInZipWithName:@"Logfile.txt" compressionLevel:OZZipCompressionLevelNone];

        [stream writeData:data];
        [stream finishedWriting];

        NSString *emailTitle = [NSString stringWithFormat:@"Log file of %@",[NSDate date]];
        NSMutableString *messageBody = [NSMutableString stringWithFormat:@"Login with %@",user[@"Username"]];
        if(![user[@"PropertyName"] isKindOfClass:[NSNull class]])[messageBody appendFormat:@"\n%@",user[@"PropertyName"]];
        [messageBody appendFormat:@"\nApp version : %@",APP_VERSION];
        [messageBody appendFormat:@"\nPlease describe your problem scenario here."];
        [messageBody appendFormat:@"\n\n\nThanks"];

        NSArray *toRecipents = [NSArray arrayWithObject:@"support@aglive.com"];

        MFMailComposeViewController *mc = [[MFMailComposeViewController alloc] init];
        mc.mailComposeDelegate = self;
        [mc setSubject:emailTitle];
        [mc setMessageBody:messageBody isHTML:NO];
        [mc setToRecipients:toRecipents];
        [mc addAttachmentData:zipdata mimeType:@"application/zip" fileName:@"test.zip"];
        [self presentViewController:mc animated:YES completion:nil];
        //NSString *myKey = [self generateMD5:@"Give me MD5 hash of the string"];

        [zipFile32 close];
    }
    else {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Aglive Pro" message:@"You have not configured your mail account. Please configure your mail account from the device settings." delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil];
        [alert show];
    }
}

现在，我可以通过电子邮件发送一个zip文件，但是当我尝试在移动设备或mac机中解压缩该文件时，我会收到警告，说

  

无法扩展为abc.zip（错误1-不允许操作）

我不知道我要去哪里。 我知道我可以通过终端来解压缩文件，即使用 unzip命令。但是我无法在Mobile中解压缩该文件。我的问题是，为什么我会收到该错误以及如何解决该错误？