From 4e7aefa7c4b2bc3e91f6a05e8ba08c9ab95256fa Mon Sep 17 00:00:00 2001
From: stickpin <630000+stickpin@users.noreply.github.com>
Date: Mon, 8 May 2023 13:12:56 +0200
Subject: [PATCH] Fix  Home Assistant 2023.5.x error

The fix for https://github.com/robinostlund/homeassistant-volkswagencarnet/issues/474
---
 custom_components/volkswagencarnet/sensor.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/custom_components/volkswagencarnet/sensor.py b/custom_components/volkswagencarnet/sensor.py
index 0442ccff..8df100bb 100644
--- a/custom_components/volkswagencarnet/sensor.py
+++ b/custom_components/volkswagencarnet/sensor.py
@@ -53,7 +53,8 @@ def _attr_native_value(self):
     @property
     def _attr_native_unit_of_measurement(self):
         """Return the unit of measurement."""
-        return self.instrument.unit
+        if self.instrument.unit:
+            return self.instrument.unit
 
     @property
     def device_class(self) -> Union[SensorDeviceClass, None]: