Dasmoto's Arts & Crafts

Dasmoto’s Arts & Crafts

So I almost finished this project and pushed everything from my local repo to the Remote one on Github. Now the last step is to add the background image for the h1. When I download the Image I need for this (pattern.jpeg) and add it to my local repo, commit and push, I get this error message.
I had no problem with the other images except this one. the difference between this one and the previous images is that pattern.jpeg is 1.45MB in size while the others are less than 15KB. I doubt that I am getting this error because of my slow internet connection because I can easily upload larger files to normal websites, and now I can not detect the problem. Can anybody help me please, thanks!