Si le fichier est vide, on ne lève pas d'erreur

src/agenda_culturel/import_tasks/extractor_ical.py

@@ -51,8 +51,6 @@ 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))
@@ -60,6 +58,9 @@ class ICALExtractor(Extractor):
         self.clear_events()
         self.uuids = {}
 
+        if content == "":
+            return self.get_structure()
+
         calendar = icalendar.Calendar.from_ical(content)
 
         for event in calendar.walk("VEVENT"):