Can't add web platform to the project, throws error

When I try to add the first platform to my project (self-hosted Appwrite) nothing happens when I click on "web" (or any other option). I just see that error in the devtools console Uncaught (in promise) SyntaxError: Unexpected token '<', "<!DOCTYPE "... is not valid JSON

I had previously deleted the initial project and re-created it with the same name, but different ID. Could it have to do someting with this issue https://github.com/appwrite/appwrite/issues/7488#issuecomment-1921859704 ?

EDIT -- just remembered, that this second project I had created from the CLI: appwrite init project and then choosing Create new project .

I use the default environment variables from the automatic docker installation (https://appwrite.io/docs/advanced/self-hosting#install-with-docker)