u want sum fix

project/urls.py

@@ -46,9 +46,9 @@ urlpatterns = [
     path('author-request/success/', TemplateView.as_view(template_name='user/become-author-success.html'), name='author-request-success'),
     path('courses/', CoursesView.as_view(), name='courses'),
     path('course/create', CourseEditView.as_view(), name='course_create'),
-    path('course/create/lessons', CourseEditView.as_view(), name='course_create'),
-    path('course/create/lessons/new', CourseEditView.as_view(), name='course_create'),
-    path('course/create/lessons/edit/<int:lesson>', CourseEditView.as_view(), name='course_create'),
+    path('course/create/lessons', CourseEditView.as_view(), name='course_create_lessons'),
+    path('course/create/lessons/new', CourseEditView.as_view(), name='course_create_lessons_new'),
+    path('course/create/lessons/edit/<int:lesson>', CourseEditView.as_view(), name='course_create_lessons_edit'),
     path('course/create/live', CourseLiveEditView.as_view(), name='course_create_live'),
     path('course/on-moderation', CourseOnModerationView.as_view(), name='course-on-moderation'),
     path('course/<int:pk>/', CourseView.as_view(), name='course'),

web/src/components/CourseRedactor.vue

@@ -681,6 +681,7 @@
             }
         },
         mounted() {
+            console.log('mounted');
             // Listen for changes to the current location.
             this.unlisten = history.listen(this.updateViewSection);
 
@@ -724,6 +725,7 @@
                 this.loadCourseDraft().then(()=>{this.updateViewSection(window.location, 'load draft')});
             }
 
+            console.log('mounted end');
             // this.updateViewSection(window.location);
         },
         computed: {

web/src/js/modules/api.js

@@ -264,7 +264,7 @@ export const api = {
             coverImageId: courseJSON.cover && courseJSON.cover.id ? courseJSON.cover.id : null,
             coverImage: courseJSON.cover && courseJSON.cover.image ? courseJSON.cover.image : null,
             content: api.convertContentResponse(courseJSON.content),
-            gallery: {images: courseJSON.gallery.gallery_images},
+            gallery: {images: (courseJSON.gallery) ? courseJSON.gallery.gallery_images:[]},
         }
     },
     convertContentResponse: (contentJson) => {