block/bridge: handle bridge is None on selection

app/terraform/block/bridge.py

@@ -1,13 +1,11 @@
 from datetime import datetime, timedelta
 import logging
 from abc import abstractmethod
-import fnmatch
 from typing import Tuple, List, Callable
 
 from app.extensions import db
 from app.models.activity import Activity
 from app.models.bridges import Bridge
-from app.models.mirrors import Proxy
 from app.terraform import BaseAutomation
 
 
@@ -28,6 +26,8 @@ class BlockBridgeAutomation(BaseAutomation):
         rotated = []
         for id_ in ids:
             bridge = bridge_select_func(id_)
+            if bridge is None:
+                continue
             logging.debug("Found %s blocked", bridge.fingerprint)
             if bridge.added > datetime.utcnow() - timedelta(hours=3):
                 logging.debug("Not rotating a bridge less than 3 hours old")