In spent more than an hour trying to figure out why a form didn't work.

I pressed the submit button and nothing happened, no error in the console and nothing in the Network tab in Chrome's devtools. And the action was being executed!

Then I found out there was a catch somewhere. I removed and it said that the url was wrong. But again, I debugged it and nothing seemed wrong. I even hardcoded the values.

At the end, it turned out that the initial "/" was missing in the request url...