title: Strange vue warn: `beforeDestroy` has been renamed to `beforeUnmount`
body: <p>Well, I have this warning in the browser console:</p>
  <pre><code>[Vue warn]: `beforeDestroy` has been renamed to `beforeUnmount`. 
  </code></pre>
  <p>at </p>
  <p>This is weird, because I have not <code>beforeDestroy</code> anywhere and I have the latest versions of the packages in my package.json:</p>
  <pre><code>  &quot;scripts&quot;: {
      &quot;serve&quot;: &quot;vue-cli-service serve&quot;,
      &quot;build&quot;: &quot;vue-cli-service build&quot;,
      &quot;lint&quot;: &quot;vue-cli-service lint&quot;
    },
    &quot;dependencies&quot;: {
      &quot;axios&quot;: &quot;^0.21.1&quot;,
      &quot;core-js&quot;: &quot;^3.6.5&quot;,
      &quot;moment&quot;: &quot;^2.29.1&quot;,
      &quot;quill&quot;: &quot;^1.3.7&quot;,
      &quot;register-service-worker&quot;: &quot;^1.7.1&quot;,
      &quot;socket.io-client&quot;: &quot;^3.1.0&quot;,
      &quot;three&quot;: &quot;^0.123.0&quot;,
      &quot;uuid&quot;: &quot;^3.4.0&quot;,
      &quot;v-calendar&quot;: &quot;^3.0.0-alpha.3&quot;,
      &quot;vue&quot;: &quot;^3.0.5&quot;,
      &quot;vue-dk-toast&quot;: &quot;^1.3.3&quot;,
      &quot;vue-material-design-icons&quot;: &quot;^4.11.0&quot;,
      &quot;vue-router&quot;: &quot;^4.0.4&quot;,
      &quot;vue-socket.io&quot;: &quot;^3.0.10&quot;,
      &quot;vue-uuid&quot;: &quot;^2.0.2&quot;,
      &quot;vue3-carousel&quot;: &quot;^0.1.11&quot;,
      &quot;vue3-quill&quot;: &quot;^0.2.1&quot;,
      &quot;vuex&quot;: &quot;^4.0.0-0&quot;
    },
    &quot;devDependencies&quot;: {
      &quot;@babel/core&quot;: &quot;^7.12.17&quot;,
      &quot;@babel/eslint-parser&quot;: &quot;^7.12.1&quot;,
      &quot;@vue/cli-plugin-babel&quot;: &quot;^4.5.10&quot;,
      &quot;@vue/cli-plugin-eslint&quot;: &quot;^4.5.10&quot;,
      &quot;@vue/cli-plugin-pwa&quot;: &quot;^4.5.11&quot;,
      &quot;@vue/cli-plugin-router&quot;: &quot;^4.5.11&quot;,
      &quot;@vue/cli-plugin-vuex&quot;: &quot;~4.5.0&quot;,
      &quot;@vue/cli-service&quot;: &quot;^4.5.11&quot;,
      &quot;@vue/compiler-sfc&quot;: &quot;^3.0.5&quot;,
      &quot;@vue/eslint-config-airbnb&quot;: &quot;^5.0.2&quot;,
      &quot;eslint&quot;: &quot;^6.8.0&quot;,
      &quot;eslint-plugin-import&quot;: &quot;^2.22.1&quot;,
      &quot;eslint-plugin-vue&quot;: &quot;^7.6.0&quot;
    }
  </code></pre>
  <p>What could be wrong? I searched for the same problem but I only found this: <a href="https://github.com/ckeditor/ckeditor5/issues/8224" rel="nofollow noreferrer">https://github.com/ckeditor/ckeditor5/issues/8224</a> , which doesn't help.
  Thanks in advance for your help.</p>