Use i18n internationalization, can be used normally, but there is a warning?

follow the online tutorials:

//main.js
import VueI18n from "vue-i18n";
Vue.use(VueI18n)
const i18n = new VueI18n({
    locale: "English",
    messages:{
        "English": require("./common/English.js"),
    }
})

//English.js
export const m = { 
    music: "Music"
}

//xx.vue
<h3>{{$t("m.music")}}</h3>
The

effect is coming out, but the browser keeps issuing warnings

clipboard.png

what is the reason for this?


there are some contents that can't be found


mainly because you haven't set the default value.

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