Footer-not loading

@interface Footer : UITableViewHeaderFooterView

@property (nonatomic, strong)           UIButton *moreData;

@end

@implementation Footer

- (instancetype)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        self.moreData = [[UIButton alloc] initWithFrame:frame];
        [self configureFooter];
    }
    return self;
}

- (void)configureFooter {
    self.moreData.translatesAutoresizingMaskIntoConstraints = NO;

    // setup title: bold big underlined text
//    var title = [[NSMutableAttributedString alloc] initWithString: @"NORIU DAUGIAU GB" ];
//
//    [title beginEditing];
//    [title addAttribute:NSUnderlineStyleAttributeName
//                  value:[NSNumber numberWithInt:1]
//                  range:(NSRange){0,[title length]}];
//    [title addAttribute:NSFontAttributeName value:kBigFont range:(NSRange){0, [title length]}];
//    [title endEditing];
//
//    self.moreData.titleLabel.attributedText = title;
    [self.contentView addSubview:self.moreData];

    // the whole footer is a button with text "more gigabytes"
    [NSLayoutConstraint activateConstraints:@[
        [self.moreData.leadingAnchor constraintEqualToAnchor:self.contentView.leadingAnchor],
        [self.moreData.trailingAnchor constraintEqualToAnchor:self.contentView.trailingAnchor],
        [self.moreData.topAnchor constraintEqualToAnchor:self.contentView.topAnchor],
        [self.moreData.bottomAnchor constraintEqualToAnchor:self.contentView.bottomAnchor],
    ]];
    self.moreData.backgroundColor = [UIColor yellowColor];
    self.moreData.titleLabel.text = @"TEXT";
    self.moreData.titleLabel.textColor = kPrimaryBlack;
}

@end


/// inside vc

@implementation VC

- (void)viewDidLoad {
    [super viewDidLoad];
    footer = [[Footer alloc]
              initWithFrame:CGRectMake(0, 0, self.tableView.bounds.size.width, 75.f)];
    [footer.moreData addTarget:self action:@selector(removeFooter) forControlEvents:UIControlEventTouchUpInside];
    self.tableView.tableFooterView = footer;
}

@end