Laravel starts new dev server instead of showing backend error

[maxonfjvipon]

• Laravel Version: 9.2
• PHP Version: 8.1
• Database Driver & Version: MySQL 8

Description:

Hey everyone.
My apologizes if I should write it somewhere else but still... I started today new project from scratch. I use Laravel + React + InertiaJS. It's not my first project but I have never experienced it before...
I have login route and projects.index route. After success login I redirect to projects.index and in projects controller in index method there is an obvious intentional error: field user_id does not exists.

I do php artisan serve, it starts on 8000 port, everything works fine. Then I log in, redirect to projects.index and I expect that Laravel shows me error page with some debug info. But instead is starts new dev server on 8001. Then he does the same on 8002 and so on.

What I get in Chrome after I logged in:

I don't really know how to reproduce it. Only this project has such behavior, idk why, other projects of mine work fine. This is a repo: https://github.com/maxonfjvipon/bpe2.0.