Thank you for your response! As I was deactivating plugins, I ended up finding out that the problem was with the theme. When I went into theme settings, customize, pages, I found that the sidebar had been enabled. I guess that happened when I updated to the newest version of the theme.
I’m not very experienced with wp sites, so maybe this is something I should have checked from the start. I would not have figured this out without your suggestion, though, so thank you very much!
