Jira error: "Remote error for 'update_feature': Unhandled error: STATUS=404 BODY={"errorMessages":["Issue Does Not Exist"],"errors":{}}"

This error means that the issue that the Aha! feature was originally linked to is no longer accessible to Aha! There are several potential reasons:

1. The issue was deleted from Jira.
2. The issue was moved to another project in Jira.
3. User permissions in Jira were changed so that the user that is being used for the Jira integration no longer has access to the issues (e.g. project access was removed).