Error External Shortcut

I have a problem with a external shortcut link,
this what I have in the log file:

2015-05-04 09:08:15 ***** ERROR ***** ERROR *****
2015-05-04 09:08:15 ***** ERROR ***** on file '/var/www/projeqtor/tool/saveAttachement.php' at line (199)
2015-05-04 09:08:15 ***** ERROR ***** cause = Illegal string offset 'name'

Lign 193 to 214 of saveattachement.php:

debugLog(" paramètres récupérés");
$result="";
$user=$_SESSION;
Sql::beginTransaction();
$attachement=new Attachement();
foreach ($uploadedFileArray as $uploadedFile) {
debugLog(" traitement fichier ".$uploadedFile);
$attachement=new Attachement();
if (! $error) {
if ($refType=="Resource") {
// To avoid dupplicate image (if 2 users save picture on same time)
$attachement->purge("refType='Resource' and refId=".$refId);
}
$attachement->refId=$refId;
$attachement->refType=$refType;
$attachement->idUser=$user->id;
$ress=new Resource($user->id);
$attachement->idTeam=$ress->idTeam;
if ($idPrivacy) {
$attachement->idPrivacy=$idPrivacy;
} else if (! $attachement->idPrivacy) {
$attachement->idPrivacy=1;

error again ...
and no error on the log file:

2015-06-02 08:33:54 ===== TRACE ===== NEW CONNECTED USER 'DEP'
2015-06-02 08:41:05 ===== TRACE ===== DISCONNECTED USER 'DEP'
2015-06-02 08:46:33 ===== TRACE ===== NEW CONNECTED USER 'LTA'
2015-06-02 08:59:30 ===== TRACE ===== NEW CONNECTED USER 'DEP'
2015-06-02 09:55:17 ===== TRACE ===== NEW CONNECTED USER 'CHD'
2015-06-02 12:07:38 ===== TRACE ===== NEW CONNECTED USER 'BEG'
2015-06-02 12:16:23 ===== TRACE ===== DISCONNECTED USER 'BEG'
2015-06-02 12:16:28 ===== TRACE ===== NEW CONNECTED USER 'BEG'
2015-06-02 12:18:26 ===== TRACE ===== DISCONNECTED USER 'BEG'
2015-06-02 12:30:19 ===== TRACE ===== DISCONNECTED USER 'DEP'
2015-06-02 12:30:23 ===== TRACE ===== NEW CONNECTED USER 'DEP'
2015-06-02 12:35:53 ===== TRACE ===== DISCONNECTED USER 'DEP'
2015-06-02 12:38:41 ===== TRACE ===== NEW CONNECTED USER 'DEP'