I'm working on putting some ajax on my website, I'm using this guide which is the one provided by octobercms for creating themes. Now for some reason as soon as I open a script tag, even an empty one, and I try to save I get this error I was wondering if there is a way around it, I copy and pasted the html in there and it is the code of the cms area, the html and css structure of it, like a refresh

In your screenshot of the error I see the following error on the page itself: {%putscripts%} instead of {% put scripts %}. I think that might be the problem. Otherwise try to empty your caches and do a force update if you think it might be a faulty installation causing the errors.