Change http status code for expired token

eidawsauth/eidawsauth.py

@@ -205,7 +205,7 @@ def auth():
     expiration_ts=  datetime.datetime.strptime(tokendict['valid_until'], '%Y-%m-%dT%H:%M:%S.%fZ')
     if (expiration_ts - datetime.datetime.now()).total_seconds() < 0:
         logging.info("Token is expired")
-        return Response('Token is expired. Please generate a new one at https://geofon.gfz-potsdam.de/eas/', status=415)
+        return Response('Token is expired. Please generate a new one at https://geofon.gfz-potsdam.de/eas/', status=400)
     logging.info("Token is valid")
 
     # Compute a random login and password