Godot 4.0 broke web exports without a webpage having certain headers(over my head content), but sites like itch have those things. I believe the explanation was because of having mulit-threaded support in the engine.
I have held off upgrading from 3.5 because my games I publish on my simple github page and that change on 4.0 would not work on my github page.
There was rumor of providing a single threaded web mode in future releases(4.1 was mentioned), but don’t know if this happened. I check release notes every few months but haven’t seen if this change has been made.
Are web exports fixed for godot now?
Hey, one more thing. Apparently they got a Python script in the repo that will create a functioning local server for you. it’s linked here.
So, it seems Python still can start a server! It’s just got a little more to worry about.