I've found the solution from the youtube comments. Here is the comment:
"Okay so I got it. Basically your browser is configured to open the file in the browser itself. So, just right click on the file and save it. This will solve the problem..."
youtube link: https://www.youtube.com/watch?v=A0KtXBR2H1A&lc=UgxzG-V9XzXX5dMg1bt4AaABAg.8enSQ4VwI2a8esiEAX9HV-