Optional arg fixed

Author: thewhaleking

bittensor/utils/axon_utils.py

@@ -21,7 +21,9 @@
 NANOSECONDS_IN_SECOND = 1_000_000_000
 
 
-def allowed_nonce_window_ns(current_time_ns: int, synapse_timeout: Optional[float]):
+def allowed_nonce_window_ns(
+    current_time_ns: int, synapse_timeout: Optional[float] = None
+) -> int:
     """
     Calculates the allowed window for a nonce in nanoseconds.