One issue I see regularly, too regularly I would say, is people putting their project on a platform using Git, such as GitHub, and then after that, they don’t commit any of the changes they make. It makes the code confusing. Why does it appear differently in the live version to on my localhost? Well it would seem you’ve made 100 changes since you put it on GitHub and then never committed another change!
Make sure if you’re using Git (which 99% of the time, why wouldn’t you be?) you keep your commits regular when you make changes, this avoids confusion, allows you to manage versions, track issues, and retrieve genuine bug reports, plus it only takes a few seconds to write a commit.