I've never worked with HUGO before, it is apparenantly some kind of static site hosting service, I am the owner of an Ionos domain, and I want to use their "Deploy Now" service, they allow you to host a website on github, and use Hugo to run it, I dont know how to set a custom 404 page, the site works fine, but the 404 is a horrible plaintext 404 page. How can I change this?
Any help at all would be appreciated greatly.
Does your project have a 404.html template? If not, you can create one in the layouts directory, and it should get picked up by Hugo, at least locally.
There's some more info on Hugo's docs: https://gohugo.io/templates/404/
Not too familiar with Ionos, but looks like you might need a step of additional config to get this picked up: https://www.ionos.com/help/hosting/html-and-css/create-your-own-error-pages-linux-webhosting/