diff --git a/management/api.py b/management/api.py
index 1a5cf55..f656f13 100755
--- a/management/api.py
+++ b/management/api.py
@@ -209,7 +209,8 @@ def open_lessons(request, context):
         course = Course.objects.get(id=request.GET['course'])
         checkbox = True if request.GET.get('homes') == 'on' else False
         themes = request.GET['themes'].split(' ')
-        themes.remove('')
+        if '' in themes:
+            themes.remove('')
         for t in themes:
             t = int(t)
             
@@ -246,7 +247,8 @@ def open_homes(request, context):
         user = User.objects.get(id=request.GET['user'])
         course = Course.objects.get(id=request.GET['course'])
         themes = request.GET['themes'].split(' ')
-        themes.remove('')
+        if '' in themes:
+            themes.remove('')
         for t in themes:
             t = int(t)
 
diff --git a/management/views.py b/management/views.py
index 5afab30..46fcc67 100755
--- a/management/views.py
+++ b/management/views.py
@@ -11,6 +11,7 @@ from courses.models import Course, CourseTheme
 from management.reports import get_now_success_hw, get_second_success_hw
 from access.models import User
 from finance.models import Bill, Price
+from .forms import UploadFileForm
 
 @response_decor(template='super_bill.html')
 def super_bill(request):
@@ -134,10 +135,13 @@ def progress_report(request):
 
 @response_decor(template='cabinet.html')
 def render_management_cabinet(request):
-    return {}
+    if request.user.in_role != 'A':
+        raise Http404
+    else:
+        return {}
+
 
 
-from .forms import UploadFileForm
 
 @response_decor(template='diplomscab.html')
 def render_diplom_cabinet(request):
@@ -145,7 +149,6 @@ def render_diplom_cabinet(request):
     if request.method == 'POST':
 
         form = UploadFileForm(request.POST, request.FILES)
-        print(form)
         for l in request.FILES['file'].readlines():
             try:
                 user = User.objects.get(email=l.rstrip().lower())
@@ -163,12 +166,10 @@ def render_diplom_cabinet(request):
 
 
         context['form'] = form
-        print(context)
         return  context
     else:
         form = UploadFileForm()
 
     context['form'] = form
-    print(context)
     return context