Permission issue perhaps?
https://stillwaterweather.com/cache/heavenpie.png
Forbidden
You don't have permission to access this resource.Server unable to read htaccess file, denying access to be safe
Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request.
Also your code says:
src="cache/heavenpie.png"
Perhaps
src="./cache/heavenpie.png"
???
Adding ./ to code didn't help. Update. It works now. Apparently adjusting file permissions in cache folder fixed problem.