Dear Hienphan,
I am using your plugin learn for my site http://www.sharpcareer.in. it was working fine. But on 31 Dec 2018 i update my wordpress by 5.0.2 and your plugin. After that my site was not loading fully. So i deactive learnpress plugin on my site i.e http://www.sharpcareer.in. Now site is working well but since plugin is deactivated so every course is invisible. Kindly resolve the issue as soon as possible.
Hemant Kr
galviya@gmail.com
wwww.sharpcareer.in