TypeError: Object(...) is not a function at createPinia

[leopons]

Hi! I can't seem to run Pinia at all with Vue3, I get a browser console error at createPinia.

Uncaught TypeError: Object(...) is not a function
    at createPinia (pinia.mjs?be92:907:1)

Here's my app.js

import { createApp } from "vue";
import App from "./App.vue";
import { createPinia } from "pinia";

createApp(App).use(createPinia()).mount("#app");

(actually this is not my real app.js but I removed everything else to keep it as simple as possible here)

And my dependencies:

    "core-js": "^3.6.5",
    "pinia": "^2.0.11",
    "vue": "^3.0.0",
    "vue-router": "^4.0.0-0",
    "vue-select": "^4.0.0-beta.3",
    "vue-svg-inline-plugin": "^2.2.0"

I am using Vue CLI, and I also tried with the unofficial plugin as described in the docs but without success (do I have to do something more than just yarn add it ?)

Also might be worth mentioning I had this problem and fixed it as described here, even though I have to say I may not grasp completely what's happening here.

I have to say I found nothing about this and don't know where to search anymore. Maybe I'm not seeing something obvious, but I'll really appreciate some help