Download cty.plist separately so errors can be better handled

spotproviders/hema.py

@@ -1,10 +1,10 @@
 import re
-from datetime import datetime, timedelta
+from datetime import datetime
 
 import pytz
 import requests
-from requests_cache import CachedSession
 
+from core.constants import HTTP_HEADERS
 from data.spot import Spot
 from spotproviders.http_spot_provider import HTTPSpotProvider
 
@@ -33,7 +33,7 @@ class HEMA(HTTPSpotProvider):
         new_spots = []
         # OK, if the spot seed actually changed, now we make the real request for data.
         if spot_seed_changed:
-            source_data = requests.get(self.SPOTS_URL, headers=self.HTTP_HEADERS)
+            source_data = requests.get(self.SPOTS_URL, headers=HTTP_HEADERS)
             source_data_items = source_data.text.split("=")
             # Iterate through source data items.
             for source_spot in source_data_items: