From 3aad223c955cdb586442c77944e3ffdfe8cf2858 Mon Sep 17 00:00:00 2001
From: pavoni <mail@gregdowling.com>
Date: Tue, 2 Feb 2016 14:14:29 +0000
Subject: [PATCH] Change to warning if attributes missing.

---
 homeassistant/components/sensor/template.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/homeassistant/components/sensor/template.py b/homeassistant/components/sensor/template.py
index b87e26aa415..fd2009b37e5 100644
--- a/homeassistant/components/sensor/template.py
+++ b/homeassistant/components/sensor/template.py
@@ -126,4 +126,9 @@ class SensorTemplate(Entity):
             self._state = template.render(self.hass, self._template)
         except TemplateError as ex:
             self._state = STATE_ERROR
+            if ex.args and ex.args[0].startswith(
+                    "UndefinedError: 'None' has no attribute"):
+                # Common during HA startup - so just a trace
+                _LOGGER.info(ex)
+                return
             _LOGGER.error(ex)