I have installed the beta version of the Vue.js development tools in Chrome and Microsoft Edge. When I load a vue webpage running locally it says

Vue.js is detected on this page.
Devtools inspection is not available because it's in production mode or explicitly disabled by the author.

I also tried setting it

app.config.devTools = true;

In main.js but it has no effect.

This is for Vue.js 3.

Is there a Vue devtools browser extension for Vue 3?