Missing SharePoint permissions
When members of the team/group where an Agenda is stored don't have permissions, Decisions functionality will not work correctly
Configure SharePoint folder access to allow members of the team/group
- Open the Sharepoint Document site for that team/group
- Find the folder Meetings
- Click on (i) icon or Members
- Add the people who should have access to the Agenda and files, or all the members of the team/group