Hi! Welcome to the community!
These diffs can be tough to interpret, but the key to success on the assessment is to make sure that your submission matches the examples in the directions and that you follow the directions step-by-step.
I was able to pull up your last submission, and it looks like you have the photos out of order in the master branch and the together branch. This could be caused by missing a step in the directions, or by making a change, but forgetting to save and/or commit the changes before submission.