使用Masonry 报NSInternalInconsistencyException错误

我在使用masonry自动布局时出现NSInternalInconsistencyException错误
xcode提示：
Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Attributes should be chained before defining the constraint relation'

代码如下：

  [self.view addSubview:btn];
  [self.view addSubview:btn1];
    __weak __typeof(&*self)weakSelf = self;
    [btn mas_makeConstraints:^(MASConstraintMaker *make) {
        make.size.mas_equalTo(CGSizeMake(100, 50));
        make.left.mas_equalTo(weakSelf.view).offset(200);
        make.top.mas_equalTo(weakSelf.view).offset(200);
    }];
    [btn1 mas_makeConstraints:^(MASConstraintMaker *make) {
        make.size.mas_equalTo(CGSizeMake(100, 100));
        make.left.mas_equalTo(weakSelf.view).with.offset(50);
        make.top.mas_equalTo(weakSelf.view).width.offset(200);
    }];

我写上面的那段代码的目的是为了替换

    btn.frame = CGRectMake(200, 200, 100, 50);
    btn1.frame = CGRectMake(50, 200, 100, 100);

---

我居然也把with写成了width，直接跪了。

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make.top.mas_equalTo(weakSelf.view).width.offset(200);

not width, but with

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mas_equalTo 和 equalTo的区别需要注意下

  [self.view addSubview:btn];
  [self.view addSubview:btn1];
    __weak __typeof(&*self)weakSelf = self;
    [btn mas_makeConstraints:^(MASConstraintMaker *make) {
        make.size.mas_equalTo(CGSizeMake(100, 50));
        make.left.equal(weakSelf.view).offset(200);
        make.top.equal(weakSelf.view).offset(200);
    }];
    [btn1 mas_makeConstraints:^(MASConstraintMaker *make) {
        make.size.mas_equalTo(CGSizeMake(100, 100));
        make.left.equal(weakSelf.view).with.offset(50);
        make.top.equal(weakSelf.view).width.offset(200);
    }];