Property or method "options" is not defined on the instance but referenced during render

[weixin_38049686]

Property or method “collapse” is not defined on the instance but referenced during render. Make sure that this property is reactive, either in the data option, or for class-based components, by initializing the property. See: https://vuejs.org/v2/guide/reactivity.html#Declaring-Reactive-Properties. image.png1117×493 35.2 KB

[weixin_38069045]

import {Collapse } from … OR Vue.use(Collapse) try this