Don't try to parse episodes if they aren't in the data

couchpotato/core/media/show/providers/info/thetvdb.py

@@ -273,6 +273,7 @@ class TheTVDb(ShowProvider):
         # Parse season and episode data
         seasons = {}
         episodes = get('episodes')
+        if episodes:
             for episode in episodes:
                 episode_nr = episode.get('nr')
                 episode_season = episode.get('season')