From 825145e83d0200303a6a1b83628eb9ba64f028f5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C2=B5?= <maarten@coldint.io>
Date: Wed, 14 Aug 2024 18:43:39 +0000
Subject: [PATCH] additional fixes

---
 bittensor/axon.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/bittensor/axon.py b/bittensor/axon.py
index 99f72eca44..0a62d6c84b 100644
--- a/bittensor/axon.py
+++ b/bittensor/axon.py
@@ -110,9 +110,9 @@ class FastAPIThreadedServer(uvicorn.Server):
     """
     Provide a channel to signal exceptions from the thread to our caller.
     """
-    _exception: Exception = None
+    _exception: Optional[Exception] = None
     _lock: threading.Lock = threading.Lock()
-    _thread: threading.Thread = None
+    _thread: Optional[threading.Thread] = None
     _started: bool = False
 
     def set_exception(self, exception: Exception) -> None: