fix initial time for replayable node
@@ -73,7 +73,7 @@ def create_replayable_node_class(replica_class, replicas_class, node_class):
_replica_class = _TestReplica
class ReplayableNode(node_class):
- _time_diff = None
+ _time_diff = 0
def utc_epoch(self) -> int:
"""
