Fix fatal error see BT#11758

main/work/work.lib.php

@@ -513,8 +513,8 @@ function showStudentWorkGrid()
         array('name'=>'type', 'index'=>'type', 'width'=>'30', 'align'=>'center', 'sortable' => 'false'),
         array('name'=>'title', 'index'=>'title', 'width'=>'250',   'align'=>'left'),
         array('name'=>'expires_on', 'index'=>'expires_on', 'width'=>'80',  'align'=>'center', 'sortable'=>'false'),
-        array('name'=>'feedback', 'index'=>'feedback', 'width'=>'80',  'align'=>'center'),
-        array('name'=>'last_upload', 'index'=>'feedback', 'width'=>'125',  'align'=>'center'),
+        array('name'=>'feedback', 'index'=>'feedback', 'width'=>'80',  'align'=>'center', 'sortable'=>'false'),
+        array('name'=>'last_upload', 'index'=>'feedback', 'width'=>'125',  'align'=>'center', 'sortable'=>'false')
     );
 
     if ($courseInfo['show_score'] == 0) {
@@ -554,7 +554,7 @@ function showTeacherWorkGrid()
         array('name'=>'title', 'index'=>'title',  'width'=>'300',   'align'=>'left', 'wrap_cell' => "true"),
         array('name'=>'sent_date', 'index'=>'sent_date', 'width'=>'125',  'align'=>'center'),
         array('name'=>'expires_on', 'index'=>'expires_on', 'width'=>'125',  'align'=>'center'),
-        array('name'=>'amount', 'index'=>'end_on', 'width'=>'110',  'align'=>'center'),
+        array('name'=>'amount', 'index'=>'amount', 'width'=>'110',  'align'=>'center', 'sortable' => 'false'),
         array('name'=>'actions', 'index'=>'actions', 'width'=>'110', 'align'=>'left', 'sortable'=>'false')
     );
 
@@ -1414,7 +1414,6 @@ function getWorkListStudent(
             $work['last_upload'] .= api_get_local_time($lastWork['sent_date']);
         }
 
-
         $work['title'] = Display::url($work['title'], $url.'&id='.$work['id']);
         $work['others'] = Display::url(
             Display::return_icon('group.png', get_lang('Others')),

main/work/work.php

@@ -1,8 +1,6 @@
 <?php
 /* For licensing terms, see /license.txt */
 
-use ChamiloSession as Session;
-
 /**
  *	@package chamilo.work
  **/
@@ -333,9 +331,9 @@ switch ($action) {
                 get_lang('Description').':'.Security::remove_XSS($my_folder_data['description'], STUDENT).
                 '</div>';
         }
-        if (api_is_allowed_to_edit() || api_is_coach()) {
-            // Work list
 
+        // Work list
+        if (api_is_allowed_to_edit() || api_is_coach()) {
             $content .= '<div class="row">';
             $content .= '<div class="col-md-12">';
             $content .= '<div class="table-responsive">';