From cf0dfc73f27bc2444b655f298b957294cfcb0025 Mon Sep 17 00:00:00 2001
From: Jaifroid <egk10@cam.ac.uk>
Date: Tue, 17 Jun 2025 14:01:34 +0100
Subject: [PATCH] Fix rare case of popover icons not found

---
 www/js/lib/popovers.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/www/js/lib/popovers.js b/www/js/lib/popovers.js
index 4efd5500..b548ca8a 100644
--- a/www/js/lib/popovers.js
+++ b/www/js/lib/popovers.js
@@ -467,6 +467,12 @@ function addEventListenersToPopoverIcons (anchor, popover, doc) {
     }
     const closeIcon = doc.getElementById('popcloseicon');
     const breakoutIcon = doc.getElementById('popbreakouticon');
+    // If the icons are not found, do not add event listeners
+    if (!closeIcon || !breakoutIcon) {
+        console.warn('Popover icons not found in the document');
+        return;
+    }
+    // Add the popoverisloading property to the popover so that it can be removed
     // Register mousedown event (should work in all contexts)
     closeIcon.addEventListener('mousedown', function () {
         closePopover(popover);