再cell中使用 报attempting to add unsupported attribute: (null)

[twlk-jzy]

Exception NSException * "attempting to add unsupported attribute: (null)" 0x0000000280c950e0

在cell中使用这个 [self.wmPlayer mas_makeConstraints:^(MASConstraintMaker *make) {
make.leading.trailing.top.equalTo(self.view);
make.height.mas_equalTo(self.wmPlayer.mas_width).multipliedBy(9.0/16);
}];

会报上面的错