Access Vue instance in Nuxt plugin

i created a nuxt plugin to use the simple-jsonrpc-js package together with the nuxt auth plugin. Now i can access it with this.$jsonApi.call() to perform a request to the server with my token provided by nuxt/auth.

I use it in many components within my nuxt app so i wanted to create an error handler for my plugin by wrapping _jrpc.call() in a try-catch block. Because im using Vuetify i want to show a snackbar component with the content of the error Message. Currently my code looks like this:

async call<T = Response<any>>(method: string, data: object = {}): Promise<T> {
    const token = this.accessTokenFactory()
    try {
        return await this._jrpc.call(method, {
            token: token,
            data
        })
    } catch (e:any) {
        const ComponentClass = Vue.extend(VSnackbar)
        const instance = new ComponentClass()
        instance.$slots.default = [e.message]
        instance.$mount()
        document.querySelector('body')?.appendChild(instance.$el)
    }
}

But when i get an error from my api, i get this error from the catch block

Which comes from the vuetify component code:

const {
  bar,
  bottom,
  footer,
  insetFooter,
  left,
  right,
  top,
} = this.$vuetify.application

My guess is that the Vue instance i am using doesn’t have the this.$vuetify.application becuase its not the same as the Vue instance used by the nuxt application…

That’s why im asking: how do i access the same Vue instance in Nuxt when injecting a plugin? The Nuxt docs arent helping and i haven’t found a similar question.

Thanks in advance for helping