From a5bb33b0fff5f84654aac8775ea868e1c121cf9c Mon Sep 17 00:00:00 2001
From: Tyler Goodlet <jgbt@protonmail.com>
Date: Fri, 25 Nov 2022 16:40:58 -0500
Subject: [PATCH] Avoid key error on already popped cancel

---
 piker/clearing/_ems.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/piker/clearing/_ems.py b/piker/clearing/_ems.py
index ad512c08..06ae3b70 100644
--- a/piker/clearing/_ems.py
+++ b/piker/clearing/_ems.py
@@ -866,7 +866,7 @@ async def translate_and_relay_brokerd_events(
 
                 elif status == 'canceled':
                     log.cancel(f'Cancellation for {oid} is complete!')
-                    status_msg = book._active.pop(oid)
+                    status_msg = book._active.pop(oid, None)
 
                 else:  # open
                     # relayed from backend but probably not handled so