[Vue warn]: provide() can only be used inside setup()

[mrc-bsllt]

I am using nuxt 2.15.8, and I created a plugin like this:

import Vue from 'vue'
import VueCryptojs from 'vue-cryptojs'

Vue.use(VueCryptojs)

Everything works, but the first time I start my local server I get this error in the console:
"[Vue warn]: provide() can only be used inside setup()"
wich I cannot remove.
Does anyone know how to solve it?