Handle invalid lookup URIs

mopidy_funkwhale/library.py

@@ -375,9 +375,14 @@ class FunkwhaleLibraryProvider(backend.LibraryProvider):
             "artist": lambda id: client.list_tracks({"artist": id})["results"],
         }
 
-        type, id = parse_uri(uri)
-        payload = config[type](id)
-        return [convert_to_track(row, cache=self.cache) for row in payload]
+        try:
+            type, id = parse_uri(uri)
+        except (IndexError, ValueError):
+            logger.info(f"Lookup failed: invalid uri '{uri}'")
+            return []
+        else:
+            payload = config[type](id)
+            return [convert_to_track(row, cache=self.cache) for row in payload]
 
 
 def parse_uri(uri):