From b34060d5e08e13cd207fb79b25409cad967ec1ee Mon Sep 17 00:00:00 2001
From: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Date: Mon, 4 May 2026 13:48:18 +0200
Subject: [PATCH] Bug 42453: Prevent 500 on the about page if elastic is not
 runing

If the elastic countainer is stopped, the about page crashes with a 500
"No nodes are available"

Test plan:
Startup ktd with `--search-engine es8`
Go to the about page
Notice that the "Elasticsearch" line contains the version and "running"
Stop the es container: `docker start koha-es-1`
Refresh the about page
=> Without this patch you get the 500
=> With this patch applied the page is rendered with:
"Version: Unkown" and "Status: not running"

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Lisette Scheer <lisette@bywatersolutions.com>
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
(cherry picked from commit fc66bac9b0118ea533c35c40c696d1029d7d66f4)
Signed-off-by: Baptiste Wojtkowski <baptiste.wojtkowski@biblibre.com>
---
 about.pl                                         | 4 +++-
 koha-tmpl/intranet-tmpl/prog/en/modules/about.tt | 2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/about.pl b/about.pl
index 9b116cf1ff..c9ba5390d5 100755
--- a/about.pl
+++ b/about.pl
@@ -891,7 +891,6 @@ sub elasticsearch_check {
             #       fetch the list of available indexes (e.g. plugins, etc)
             $es_status->{nodes} = $es_conf->{nodes};
             my $es = Search::Elasticsearch->new($es_conf);
-            my $es_status->{version} = $es->info->{version}->{number};
 
             foreach my $index (@indexes) {
                 my $index_count;
@@ -930,6 +929,9 @@ sub elasticsearch_check {
                     };
             }
             $es_status->{running} = $es_running;
+            if ($es_running) {
+                $es_status->{version} = $es->info->{version}->{number};
+            }
 
             $template->param(
                 elasticsearch_status      => $es_status,
diff --git a/koha-tmpl/intranet-tmpl/prog/en/modules/about.tt b/koha-tmpl/intranet-tmpl/prog/en/modules/about.tt
index 5e8b4d2fdb..773f1096cc 100644
--- a/koha-tmpl/intranet-tmpl/prog/en/modules/about.tt
+++ b/koha-tmpl/intranet-tmpl/prog/en/modules/about.tt
@@ -142,7 +142,7 @@
                         [% END %]
                         <td class="[% td_class | html %]">
                             <span>Version:</span>
-                            <span>[% elasticsearch_status.version | html %]</span>
+                            <span>[% elasticsearch_status.version || t("Unknown") | html %]</span>
                             |
                             <span>Nodes:</span>
                             <span>[% elasticsearch_status.nodes.join(' / ') | html %]</span>