From 853c6d44c5141231962a4857deea565e048b4017 Mon Sep 17 00:00:00 2001
From: Andelf <andelf@gmail.com>
Date: Thu, 8 Sep 2022 11:00:49 +0800
Subject: [PATCH] fix(latex): avoid accessing null

---
 src/main/frontend/extensions/latex.cljs | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/main/frontend/extensions/latex.cljs b/src/main/frontend/extensions/latex.cljs
index dbbd303d9f..a442a9e603 100644
--- a/src/main/frontend/extensions/latex.cljs
+++ b/src/main/frontend/extensions/latex.cljs
@@ -18,10 +18,12 @@
   [state]
   (let [[id s display?] (:rum/args state)]
     (try
-      (js/katex.render s (gdom/getElement id)
-                      #js {:displayMode display?
-                           :throwOnError false
-                           :strict false})
+      (when-let [elem (gdom/getElement id)]
+        (js/katex.render s elem
+                         #js {:displayMode display?
+                              :throwOnError false
+                              :strict false}))
+
       (catch js/Error e
         (js/console.error e)))))