From 87b7cea567b5989311e29fb342fb588e3ee423e4 Mon Sep 17 00:00:00 2001
From: DiTus <ditus@o2.pl>
Date: Sun, 1 Mar 2026 22:53:18 +0100
Subject: [PATCH] fixed: check pane element exists before observing

---
 .../static/js/ui/indicators-panel-new.js      | 23 +++++++++++--------
 1 file changed, 13 insertions(+), 10 deletions(-)

diff --git a/src/api/dashboard/static/js/ui/indicators-panel-new.js b/src/api/dashboard/static/js/ui/indicators-panel-new.js
index c472733..a6bcb7e 100644
--- a/src/api/dashboard/static/js/ui/indicators-panel-new.js
+++ b/src/api/dashboard/static/js/ui/indicators-panel-new.js
@@ -962,17 +962,20 @@ export function drawIndicatorsOnChart() {
             
             // Subscribe to pane height changes to save to localStorage
             const originalHeight = storedHeight;
-            const resizeObserver = new ResizeObserver((entries) => {
-                for (const entry of entries) {
-                    const newHeight = Math.round(entry.contentRect.height);
-                    if (newHeight !== originalHeight && newHeight > 50) {
-                        indicator.paneHeight = newHeight;
-                        localStorage.setItem(`pane_height_${indicator.type}`, newHeight);
-                        console.log(`[Indicators] Saved pane height for ${indicator.type}: ${newHeight}px`);
+            const paneElement = pane.getHTMLElement && pane.getHTMLElement();
+            if (paneElement) {
+                const resizeObserver = new ResizeObserver((entries) => {
+                    for (const entry of entries) {
+                        const newHeight = Math.round(entry.contentRect.height);
+                        if (newHeight !== originalHeight && newHeight > 50) {
+                            indicator.paneHeight = newHeight;
+                            localStorage.setItem(`pane_height_${indicator.type}`, newHeight);
+                            console.log(`[Indicators] Saved pane height for ${indicator.type}: ${newHeight}px`);
+                        }
                     }
-                }
-            });
-            resizeObserver.observe(pane.getHTMLElement());
+                });
+                resizeObserver.observe(paneElement);
+            }
         }
     });