The hero image on my home page needs to be changed. However, Cornerstone is giving an error message saying an unidentifiable error is preventing the live preview so it is switching to skeleton mode. I do not know how to use skeleton mode and am uncomfortable following what little information seems available online.
I also need to add a bit of text, but skeleton mode concerns me here as well.
What is the problem with Cornerstone?
How do I fix the problem?
How do I make the necessary changes to my home page?