Issues have been introduced by request #16149.

The user autocompleter throws warnings and the SQL query to retrieve the project members does not work at all.

The administration of project members is not the only parts being affected but it's the only one that does not work at all.

Traces:
2020/08/04 07:00:50 [error] 1387#0: *1191 FastCGI sent in stderr: "PHP message: PHP Notice: Error encountered while retrieving data ==> SELECT
user.realname,
user.user_id,
user.user_name,
user.email,
user.status,
user_group.admin_flags,
user_group.wiki_flags,
user_group.forum_flags,
user_group.news_flags,
user.has_avatar,
IF(generic_user.group_id, 1, 0) AS is_generic,
GROUP_CONCAT(DISTINCT ugroup_user.ugroup_id) AS ugroups_ids
FROM user_group
INNER JOIN user
ON (
user.user_id = user_group.user_id
)
LEFT JOIN generic_user
ON (
generic_user.user_id = user.user_id
AND generic_user.group_id = 126
)
...PHP message: PHP Warning: Invalid argument supplied for foreach() in /usr/share/tuleap/src/common/Project/Admin/ProjectMembers/ProjectMembersController.php on line 339" while reading response header from upstream, client: 172.22.0.4, server: tuleap, request: "GET /project/126/admin/members HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "tuleap", referrer: "https://tuleap/project/admin/editgroupinfo.php?group_id=126"
2020/08/04 07:00:51 [error] 1387#0: *1186 FastCGI sent in stderr: "PHP message: PHP Notice: Undefined index: has_avatar in /usr/share/tuleap/src/www/user/autocomplete.php on line 107" while reading response header from upstream, client: 172.22.0.4, server: tuleap, request: "GET /user/autocomplete.php?return_type=json_for_select_2&name=ProjectMember&page=1&codendi_user_only=0&project_id=126 HTTP/1.1"