How to resolve The provided locale does not exist ?

[lean barn]

so you can use something like this

and then expect the routing to work for locales defined in the locales array

I visite an undefined local

by this you mean a URL without locale? that should redirect to your defaultLocale property

[forest light]

Hi. This is my config: i18n: { defaultLocale: "en", locales: ["en", "fr"], routing: { prefixDefaultLocale: true } },

the demo project is here: https://github.com/danygiguere/astro-4-example-with-i18n-and-jwt