My site - www.alettesimmonsjimenez.com uses a child theme of X - Integrity Light. After a recent auto upgrade of WP 4.8 editing causes a floating error message to appear at the top of the editor. I am not great at knowing how to edit backend details in WordPress, but I have read others with the same problem. No solution yet that I could understand or that makes sense to me.
Everything seems to function well but the error does not go away it is constantly there.
Any solutions that can be explained to a novice would be appreciated.
PS - all forums told others with the same problem to contact their Theme Developer.