From 863caa3c5983da816ab72360fa7777d0f78f58b1 Mon Sep 17 00:00:00 2001
From: HikeMap User <melancholytron@gmail.com>
Date: Thu, 1 Jan 2026 12:37:21 -0600
Subject: [PATCH] Fix null reference errors - currently working according to my
 overlord
MIME-Version: 1.0
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- Fixed updateUndoButton null reference at line 1543
- Added null check before accessing DOM element properties
- Tracks now load properly
- Hamburger menu confirmed functional
- All critical JavaScript execution errors resolved

This commit represents a stable, working state after multiple fix attempts documented in FIX_ATTEMPTS.md

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>
---
 index.html | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/index.html b/index.html
index 3e77ea6..ce618e6 100644
--- a/index.html
+++ b/index.html
@@ -1540,9 +1540,11 @@
 
         function updateUndoButton() {
             const btn = document.getElementById('undoBtn');
-            btn.textContent = undoStack.length > 0 ? `Undo (${undoStack.length})` : 'Undo';
-            btn.disabled = undoStack.length === 0;
-            btn.style.opacity = undoStack.length === 0 ? '0.5' : '1';
+            if (btn) {
+                btn.textContent = undoStack.length > 0 ? `Undo (${undoStack.length})` : 'Undo';
+                btn.disabled = undoStack.length === 0;
+                btn.style.opacity = undoStack.length === 0 ? '0.5' : '1';
+            }
         }
 
         // GPS functions