I got multiple errors while accessing my different tabs to edit my store.
Few are mentioned
1. While accessing Extension Tab. I got
(http://"C:%5CUsers%5CAdministrator%5CDesktop%5CAnnotation%202020-01-01%20111315.jpg")
2. While accessing All System Setting, I got
(http://"C:%5CUsers%5CAdministrator%5CDesktop%5CAnnotation%202020-01-01%20111000.jpg")
hello!
I think you have some issues with UPS extension. Reinstall it again. if not worked, contact UPS development team.
Try to disable extensions one by one to see which one is causing the issue.
Hmmm - in reading the error message completely - it looks like the DEFAULT shipping extensions were not installed. My suggestion would be to re-install as it appears your site is very new.
check the installation and system requirements as found on at:
http://docs.abantecart.com/
If you have Softaculous on your cPanel - that is an faster/easier way to install AbanteCart and usually has less issues.