403 Error on homepage of second language
Did you define the the locale url in your config?

I do it like this:

.env

SITE_URL_DE="@web"
SITE_URL_EN="@web/en"
SITE_URL_FR="@web/fr"
SITE_URL_IT="@web/it"


general.php

// Global settings
  '*' =&gt; [
    'siteUrl' =&gt; [
        'siteDe' =&gt; getenv('SITE_URL_DE'),
        'siteFr' =&gt; getenv('SITE_URL_FR'),
        'gsiteEn' =&gt; getenv('SITE_URL_EN'),
        'siteIt' =&gt; getenv('SITE_URL_IT'),
    ],
  ],


Then you can use those as your base URL's: