I deleted the Booster SEO app bc I thought it wasn't doing anything, but after uninstalling the app, all my images do not show! I believe the image links are incorrect. I reinstalled the app but that did not fix it.
Or get a new copy of the theme and use a diff tool, like Meld, to compare a new theme version to the theme you have that's broken.
If you need this fixed professionally then contact me by mail for services, Contact info in signature. ALWAYS please provide context, examples: store url, theme name, post url(s) , or any further detail.