From 3833b208ea59464bd2ab88230fad83c6932641d6 Mon Sep 17 00:00:00 2001
From: Hans5958 <hans5958@outlook.com>
Date: Sun, 17 Apr 2022 12:37:31 +0700
Subject: [PATCH] Do not draw is no path is defined when drawing

---
 web/_js/draw.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/web/_js/draw.js b/web/_js/draw.js
index 7d69c8d6..29fd815b 100644
--- a/web/_js/draw.js
+++ b/web/_js/draw.js
@@ -374,6 +374,8 @@ function initDraw() {
 
 	function render(path) {
 
+		if (!Array.isArray(path)) return
+
 		context.globalCompositeOperation = "source-over";
 		context.clearRect(0, 0, canvas.width, canvas.height);