[farsgsm]

thanks for your reply
here is what my functions.php have on mentioned lines
maybe can help find problem:

[10-Jun-2017 20:16:42 UTC] PHP Warning: Illegal string offset 'usergroupid' in /home/user/public_html/includes/functions.php on line 383

$membergroups[] = $user['usergroupid'];


[10-Jun-2017 20:16:42 UTC] PHP Warning: Illegal string offset 'usergroupid' in /home/user/public_html/includes/functions.php on line 449

if ($userinfo['usergroupid'] == $usergroupid OR in_array($usergroupid, $user_memberships["$userinfo[userid]"]))


[10-Jun-2017 20:16:42 UTC] PHP Warning: Illegal string offset 'userid' in /home/user/public_html/includes/functions.php on line 440

if (!is_array($user_memberships["$userinfo[userid]"]) OR !$cache)