Steps to reproduce
- Start DXP with DE-29 and login as admin
- Go to Control Panel > Sites > Sites and Create two blank sites "Site A" and "Site B"
- Go to Control Panel > Users > Users and Organizations and create a user
- In the user's edit display, grant site membership of "Site A" and "Site B" and Save
- In user's edit display, select Site Roles, then select any site (e.g. Site A or Site B)
The Site role screen displays, and the list of roles are available
Site roles are not listed after selecting the desired site. Instead, the error "Roles is temporary unavailable" is shown on display. (See "error.png"). This time, Errors below are seen in log