Geckos client and server not connecting anymore. Even on local machine

[Quitalizner]

I'm working on a platform shooter for quite some time now using geckos and phaser.
I returned after a 2-month break as I was working on other projects. Everything was stable when I left. I even deployed it to production with everything working fine.

I check the prod link and the server doesn't connect. I go and check in the server and the process is running fine.

So I try to check if the browser updates have affected connection somehow, so I run the server on my local machine and it won't connect.

I've attached the screenshot of the error

I suspect it has something to do with the browser. I tried on Brave, Chrome and Firefox. None of them work anymore