[Bugfix]

cron.py

@@ -106,7 +106,10 @@ def cron():
             for item in new_properties:
                 query = """SELECT parent FROM properties where property = ?;"""
                 cur.execute(query, (item,))
-                parent = cur.fetchone()['parent']
+                row = cur.fetchone()
+                parent = ''
+                if len(row) > 0:
+                    parent = row['parent']
                 if (parent):
                     value = player_json[parent][property]
                 else: