Nuxt.js changing code from 'static' target to 'server' target

Question

I have a nuxt2 project with target:'static'. It´s working very well.

Now, I´d like to change to target:'server' and ssr:true.

I have a plugin(in plugin folder) with this code:

export default (ctx, inject) => {
  const bus = new Vue()
  inject('bus', bus)
}

In my default.vue, I have this code:

// default.vue

created() {
    this.$bus.$on('novo_preatend', (arg) => {
        ....
    })

When I execute 'npm run dev' I get an error:

TypeError
Cannot read properties of undefined (reading '$on')