Dev tools problem

in the The Ultimate HTML5 & CSS3 Series: Part 1 under the Web Development Fundamentals section video 4- Inspecting HTTP Requests and Responses, when he is using Dev Tools and he refreshes his browser and gets all kinds of http requests in dev tools, When I refreshed I didn’t get anything. Can anybody give me some advice on this?

I figured this problem out. I was filtering the requests! I deleted the filter and clicked all and everything was good. Just including what I did in case anyone has this problem in the future!