From 27719772b50adb162ee51f773ba93aa6b9381d5d Mon Sep 17 00:00:00 2001
From: Greg Roach <greg@subaqua.co.uk>
Date: Mon, 2 Mar 2026 20:28:43 +0000
Subject: Fix: #5327 - Lifespan chart errors when no dates available

---
 app/Module/LifespansChartModule.php | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/app/Module/LifespansChartModule.php b/app/Module/LifespansChartModule.php
index 64d7ee3ebc..6028640680 100644
--- a/app/Module/LifespansChartModule.php
+++ b/app/Module/LifespansChartModule.php
@@ -285,6 +285,11 @@ class LifespansChartModule extends AbstractModule implements ModuleChartInterfac
             return $carry;
         }, 0);
 
+        // No dates?  Show the current year.
+        if ($jd === 0) {
+            return (int) date('Y');
+        }
+
         $year = $this->jdToYear($jd);
 
         // Don't show future dates
@@ -308,6 +313,11 @@ class LifespansChartModule extends AbstractModule implements ModuleChartInterfac
             return $carry;
         }, PHP_INT_MAX);
 
+        // No dates?  Show the current year.
+        if ($jd === PHP_INT_MAX) {
+            return (int) date('Y');
+        }
+
         return $this->jdToYear($jd);
     }
 
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