控制台报错
Functions are not valid as a React child. This may happen if you return a Component instead of <Component /> from render. Or maybe you meant to call this function rather than return it.
使用一个{} 去渲染一个组件 就会报这样一个错误
FooterForm 是一个组件
使用时不小心写成了 {FooterForm} 所以报上面的错误
应该将 {FooterForm} 改为 <FooterForm/>