[tasks] Fix when note is a string

vrobbler/apps/scrobbles/scrobblers.py

@@ -721,9 +721,12 @@ def emacs_scrobble_update_task(
 
     notes_updated = False
     for note in emacs_notes:
-        existing_note_ts = [
-            n.get("timestamp") for n in scrobble.log.get("notes", [])
-        ]
+        try:
+            existing_note_ts = [
+                n.get("timestamp") for n in scrobble.log.get("notes", [])
+            ]
+        except AttributeError:
+            existing_note_ts = []
         if not scrobble.log.get('notes"'):
             scrobble.log["notes"] = []
         if note.get("timestamp") not in existing_note_ts: