On affiche explicitement les fichiers vides (cf RCCF)

src/agenda_culturel/import_tasks/extractor_ical.py

@@ -6,6 +6,7 @@ import bbcode
 
 from datetime import datetime, date, timedelta
 from bs4 import BeautifulSoup, MarkupResemblesLocatorWarning
+from django.utils.translation import gettext_lazy as _
 
 from .extractor import *
 
@@ -50,6 +51,8 @@ class ICALExtractor(Extractor):
     def extract(
         self, content, url, url_human=None, default_values=None, published=False
     ):
+        if content == "":
+            raise Exception(_('The source is empty'))
         warnings.filterwarnings("ignore", category=MarkupResemblesLocatorWarning)
 
         print("Extracting ical events from {}".format(url))