Fix!

seminar/models.py

@@ -4,6 +4,7 @@ import random
 import subprocess
 import pathlib
 import tempfile
+import logging
 
 from django.contrib.sites.shortcuts import get_current_site
 from django.db import models
@@ -37,6 +38,8 @@ from polymorphic.models import PolymorphicModel
 from django.core.mail import EmailMessage
 from seminar.utils import aktivniResitele
 
+logger = logging.getLogger(__name__)
+
 class SeminarModelBase(models.Model):
 
 	class Meta: