From ab4438b6a521ce320827d894be84324fc4342a49 Mon Sep 17 00:00:00 2001
From: un-pogaz <46523284+un-pogaz@users.noreply.github.com>
Date: Fri, 17 Jan 2025 15:05:36 +0100
Subject: [PATCH] fix also for content-server

---
 src/calibre/srv/metadata.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/calibre/srv/metadata.py b/src/calibre/srv/metadata.py
index 4a91bec895..2be8f1eebd 100644
--- a/src/calibre/srv/metadata.py
+++ b/src/calibre/srv/metadata.py
@@ -193,7 +193,7 @@ def get_icon_for_node(node, parent, node_to_tag_map, tag_map, eval_formatter):
     if val_icon is None and TEMPLATE_ICON_INDICATOR in value_icons.get(category, {}):
         t = eval_formatter.safe_format(
             value_icons[category][TEMPLATE_ICON_INDICATOR][0], {'category': category, 'value': name_for_icon(node)},
-            'VALUE_ICON_TEMPLATE_ERROR', None)
+            'VALUE_ICON_TEMPLATE_ERROR', {})
         if t:
             # Use POSIX path separator
             val_icon = 'template_icons/' + t