diff --git a/src/CoreBundle/Controller/CourseController.php b/src/CoreBundle/Controller/CourseController.php
index e07a197971..9c8632c5ff 100644
--- a/src/CoreBundle/Controller/CourseController.php
+++ b/src/CoreBundle/Controller/CourseController.php
@@ -245,52 +245,6 @@ class CourseController extends ToolBaseController
             ];
         }
 
-        // Get session-career diagram
-        $diagram = '';
-        /*$allow = api_get_configuration_value('allow_career_diagram');
-        if (true === $allow) {
-            $htmlHeadXtra[] = api_get_js('jsplumb2.js');
-            $extra = new ExtraFieldValue('session');
-            $value = $extra->get_values_by_handler_and_field_variable(
-                api_get_session_id(),
-                'external_career_id'
-            );
-
-            if (!empty($value) && isset($value['value'])) {
-                $careerId = $value['value'];
-                $extraFieldValue = new ExtraFieldValue('career');
-                $item = $extraFieldValue->get_item_id_from_field_variable_and_field_value(
-                    'external_career_id',
-                    $careerId,
-                    false,
-                    false,
-                    false
-                );
-
-                if (!empty($item) && isset($item['item_id'])) {
-                    $careerId = $item['item_id'];
-                    $career = new Career();
-                    $careerInfo = $career->get($careerId);
-                    if (!empty($careerInfo)) {
-                        $extraFieldValue = new ExtraFieldValue('career');
-                        $item = $extraFieldValue->get_values_by_handler_and_field_variable(
-                            $careerId,
-                            'career_diagram',
-                            false,
-                            false,
-                            0
-                        );
-
-                        if (!empty($item) && isset($item['value']) && !empty($item['value'])) {
-                            // @var Graph $graph
-                            $graph = UnserializeApi::unserialize('career', $item['value']);
-                            $diagram = Career::renderDiagram($careerInfo, $graph);
-                        }
-                    }
-                }
-            }
-        }*/
-
         // Deleting the objects
         $session->remove('toolgroup');
         $session->remove('_gid');
@@ -306,10 +260,14 @@ class CourseController extends ToolBaseController
             $shortcuts = $shortcutQuery->getQuery()->getResult();
         }
         $responseData = [
-            'course' => $course,
+            'course' => [
+                'id' => $course->getId(),
+                'title' => $course->getTitle(),
+                'resourceNode' => $course->getResourceNode(),
+            ],
             'session' => $courseSession,
             'shortcuts' => $shortcuts,
-            'diagram' => $diagram,
+            'diagram' => '',
             'tools' => $tools,
         ];
 
diff --git a/src/CoreBundle/EventSubscriber/AnonymousUserSubscriber.php b/src/CoreBundle/EventSubscriber/AnonymousUserSubscriber.php
index 4418b44ee4..2d4fda148d 100644
--- a/src/CoreBundle/EventSubscriber/AnonymousUserSubscriber.php
+++ b/src/CoreBundle/EventSubscriber/AnonymousUserSubscriber.php
@@ -113,7 +113,6 @@ class AnonymousUserSubscriber implements EventSubscriberInterface
         foreach ($anonymousUsers as $user) {
             $loginRecord = $trackLoginRepository->findOneBy(['userIp' => $userIp, 'user' => $user]);
             if ($loginRecord) {
-                error_log('Existing login found for user ID: '.$user->getId());
 
                 return $user->getId();
             }
@@ -147,8 +146,6 @@ class AnonymousUserSubscriber implements EventSubscriberInterface
         $this->entityManager->persist($anonymousUser);
         $this->entityManager->flush();
 
-        error_log('New anonymous user created: '.$anonymousUser->getId());
-
         return $anonymousUser->getId();
     }
 }