Cannot use plugin with that...

[niceque]

Just setted up a ref with component
made .use(html5media) plugin for video/audio support in mounted() {}
but nothig works, where i need to declare use?

Uncaught TypeError: Cannot read property 'apply' of undefined
    at b.use (markdown-it-vue-light.umd.min.js?eb52:1)
    at VueComponent.use (markdown-it-vue-light.umd.min.js?eb52:6)
    at <anonymous>:1:70

[awci]

Can you pls share the mounted part that you use the use?
The below code is working

mounted() {
....
this.$refs.markdownView.use(html5media)
}
```