I just installed silverstripe (installer v4.7.3) freshly via Composer (v2.0.12) and set the .env file with my database data. The database was then initialised by calling up the page. However, I was never asked for login information during the installation and none was displayed after the database initialisation was completed. However, the login in the CMS area requires user data, which I do not have now. The database table "Members" is also empty, even after several installation attempts. (On Windows with XAMP v3.2.4) How can I log in?
I finally found the solution. You just have to add following lines in your .env-file
SS_DEFAULT_ADMIN_USERNAME="admin"
SS_DEFAULT_ADMIN_PASSWORD="password"