Summary
When customers is using the "Get users from group" endpoint, they receive a "Internal Server Error":
GET /rest/api/2/group/member
Investigation Done
If the URL does not use include the "startAt" and "maxResults" parameter, the REST API call will return an internal server error.
For example, calling this REST endpoint:
GET https://thefactore.atlassian.net/rest/api/2/group/member?groupname=jira-maconomy-sync
will return this response:
{"errorMessages":["Internal server error"],"errors":{}}
Workaround
Add these parameters at the end of the URL/REST end point.
&startAt=0&maxResults=500
The complete URL should look like this:
https://<atlassian-domain>.atlassian.net/rest/api/2/group/member?includeInactiveUsers=false&groupname=onduty-stronghold&startAt=0&maxResults=500
This will prevent the internal server error from being returned.