Fix LiveLessonsDetailView perms

apps/school/views.py

@@ -38,11 +38,11 @@ class LiveLessonsDetailView(DetailView):
         response = super().get(request, pk=pk)
         try:
             school_payment = SchoolPayment.objects.get(
-                user=request.user, date_start__gte=now(), date__end__lte=now()
+                user=request.user, date_start__lte=now(), date_end__gte=now()
             )
         except SchoolPayment.DoesNotExist:
             school_payment = None
-        if request.user.role not in [User.ADMIN_ROLE, User.TEACHER_ROLE] or not (
+        if request.user.role not in [User.ADMIN_ROLE, User.TEACHER_ROLE] and not (
             request.user.role == User.USER_ROLE and
             school_payment and
             school_payment.is_deliverable()