From ed22ecedbfd51fc2f5572930aacd37e5b48e04cf Mon Sep 17 00:00:00 2001
From: koenkk <koenkanters94@gmail.com>
Date: Wed, 2 Aug 2023 19:34:39 +0200
Subject: [PATCH] fix: Fix Home Assistant `TypeError: object of type 'NoneType'
 has no len()` error. https://github.com/Koenkk/zigbee2mqtt/issues/17861

---
 lib/extension/homeassistant.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/extension/homeassistant.ts b/lib/extension/homeassistant.ts
index c08ede10..9a095887 100644
--- a/lib/extension/homeassistant.ts
+++ b/lib/extension/homeassistant.ts
@@ -890,7 +890,7 @@ export default class HomeAssistant extends Extension {
             const lookup: {[s: string]: KeyValue} = {
                 action: {icon: 'mdi:gesture-double-tap'},
                 programming_mode: {icon: 'mdi:calendar-clock'},
-                program: {value_template: `{{ value_json.${firstExpose.property}|default("") ` +
+                program: {value_template: `{{ value_json.${firstExpose.property}|default('',true) ` +
                     `| truncate(254, True, '', 0) }}`},
             };
             if (firstExpose.access & ACCESS_STATE) {