Yes, it does! Now "Groups" tab functions correctly!!
But now I've found out one thing more..
The similar message appears on "Course Enrolment" tab and "
Not Enrolled" list is not being populated:
The text, ntext, or image data type cannot be selected as DISTINCT.
SELECT DISTINCT u.* ,u.lastaccess FROM mdl_user u, mdl_groups_members m WHERE m.groupid = '16' AND m.userid = u.id ORDER BY u.lastaccess DESC
- line 686 of lib\dmllib.php: call to debugging()
- line 966 of lib\dmllib.php: call to get_recordset_sql()
- line 1252 of lib\deprecatedlib.php: call to get_records_sql()
- line 208 of blocks\fn_site_groups\sitegroups.php: call to get_group_users()
I guess the line 208 of sitegroups.php should be corrected too.
Thank you for your support!