From 0da4034179bcca7a3ba259532ce3f4e17859f9ba Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@koston.org>
Date: Thu, 28 Jan 2021 09:05:02 -0600
Subject: [PATCH] Ensure history LazyState state value is always a string
 (#45644)

Co-authored-by: Paulus Schoutsen <paulus@home-assistant.io>
---
 homeassistant/components/history/__init__.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/homeassistant/components/history/__init__.py b/homeassistant/components/history/__init__.py
index 894c2b15e47..1e22e45a892 100644
--- a/homeassistant/components/history/__init__.py
+++ b/homeassistant/components/history/__init__.py
@@ -699,7 +699,7 @@ class LazyState(State):
         """Init the lazy state."""
         self._row = row
         self.entity_id = self._row.entity_id
-        self.state = self._row.state
+        self.state = self._row.state or ""
         self._attributes = None
         self._last_changed = None
         self._last_updated = None