It works in course page: https://share.getcloudapp.com/2Nurel2b
from curriculum it does not work: https://share.getcloudapp.com/8LuwE5wq
please make sure your theme and all wplms plugins are of latest version i.e. 3.9.8
this is a script error. I would suggest you to follow the following and check if it works??
- Please deactivate all installed 3rd party plugins.
- Delete browsers cache especially cache plugin.
- Re-save permalinks.
deactivate everything other than wplms defaults then check if it works.