From 293c3ccba1877adc1061064b410ea54b62beb4ad Mon Sep 17 00:00:00 2001
From: Ronnie Dutta <61982285+MetRonnie@users.noreply.github.com>
Date: Thu, 5 Sep 2024 10:53:45 +0100
Subject: [PATCH] Flake8 B904 (#6356)

---
 cylc/flow/dbstatecheck.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cylc/flow/dbstatecheck.py b/cylc/flow/dbstatecheck.py
index 5039cf0d7ba..fc2d9cf0da3 100644
--- a/cylc/flow/dbstatecheck.py
+++ b/cylc/flow/dbstatecheck.py
@@ -378,7 +378,7 @@ def check_polling_config(selector, is_trigger, is_message):
         try:
             trigger = TASK_STATE_MAP[selector]
         except KeyError:
-            raise InputError(f'No such task state "{selector}"')
+            raise InputError(f'No such task state "{selector}"') from None
         else:
             if trigger is None:
                 raise InputError(