From 984fb01f48fee38f1751fa8c1f857d97bdf72e94 Mon Sep 17 00:00:00 2001
From: xnought <bertuccd@oregonstate.edu>
Date: Mon, 6 May 2024 11:04:08 -0700
Subject: [PATCH] fix: destroy only if canvas inserted molstar

---
 frontend/src/lib/Molstar.svelte | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/frontend/src/lib/Molstar.svelte b/frontend/src/lib/Molstar.svelte
index e4d67fd..617de46 100644
--- a/frontend/src/lib/Molstar.svelte
+++ b/frontend/src/lib/Molstar.svelte
@@ -70,9 +70,11 @@
 	}
 
 	onDestroy(() => {
-		loseWebGLContext(divEl.querySelector("canvas")!);
-		m.plugin.dispose();
-		subscribe.unsubscribe();
+		if (divEl && divEl.querySelector("canvas")) {
+			loseWebGLContext(divEl.querySelector("canvas")!);
+			m.plugin.dispose();
+			subscribe.unsubscribe();
+		}
 	});
 
 	$: {