Netlify broke my fetch calls

Hello. I run a SvelteKit website using Netlify, live on On, there’s a contact form with 3 fields. When an user fills the form, it gets sent via fetch post calls to a Discord Webhook as well as to Google Forms. This works perfectly locally, but when the website gets deployed, they don’t work anymore. There are no errors in the console, you can check yourself.

The website is open-source and you can find the code for the form here: doncezart-site/src/routes/contact/+page.server.js at main · doncezart/doncezart-site · GitHub

Could you try adding some console.log statements in the action to see the flow of the request? If it gets triggered or not, and what point the code reaches till.