diff --git a/src/js/lang.js b/src/js/lang.js
index 95fbeec..752a8b3 100644
--- a/src/js/lang.js
+++ b/src/js/lang.js
@@ -1,5 +1,5 @@
 document.addEventListener("DOMContentLoaded", function() {
-    document.getElementById('switch-lang').addEventListener('click', switchLang);
+    document.getElementById('switch-lang')?.addEventListener('click', switchLang);
 })
 
 function switchLang(event) {
diff --git a/src/js/main.js b/src/js/main.js
index b4913a5..bceef6d 100644
--- a/src/js/main.js
+++ b/src/js/main.js
@@ -23,13 +23,13 @@ document.addEventListener("DOMContentLoaded", function() {
     document.getElementById("syntax_highlight").href = "/syntax-light.css";
   }
   // Switch theme action
-  document.getElementById('switch-theme').addEventListener('click', switchTheme);
+  document.getElementById('switch-theme')?.addEventListener('click', switchTheme);
 
   // ---------------- Toggle Sidebar -------------------------
-  document.getElementById('toggle-sidebar').addEventListener('click', toggleSidebar);
+  document.getElementById('toggle-sidebar')?.addEventListener('click', toggleSidebar);
 
   // ---------------- Toggle Mobile menu -------------------------
-  document.getElementById('toggle-mobile-menu').addEventListener('click', toggleMobileMenu);
+  document.getElementById('toggle-mobile-menu')?.addEventListener('click', toggleMobileMenu);
 });
 
 function switchTheme() {
diff --git a/static/js/lang.js b/static/js/lang.js
index 3422dae..75b888c 100644
--- a/static/js/lang.js
+++ b/static/js/lang.js
@@ -1 +1 @@
-function switchLang(n){document.getElementById("switch-lang-panel").classList.toggle("hidden")}document.addEventListener("DOMContentLoaded",function(){document.getElementById("switch-lang").addEventListener("click",switchLang)});
\ No newline at end of file
+function switchLang(n){document.getElementById("switch-lang-panel").classList.toggle("hidden")}document.addEventListener("DOMContentLoaded",function(){document.getElementById("switch-lang")?.addEventListener("click",switchLang)});
\ No newline at end of file
diff --git a/static/js/main.js b/static/js/main.js
index 4e4cf49..6331b14 100644
--- a/static/js/main.js
+++ b/static/js/main.js
@@ -1 +1 @@
-function switchTheme(){"dark"==([...document.documentElement.classList].includes("dark")?"dark":"light")?(localStorage.theme="light",document.documentElement.classList.remove("dark"),document.getElementById("light").classList.add("hidden"),document.getElementById("dark").classList.remove("hidden"),document.getElementById("syntax_highlight").href="/syntax-light.css"):(localStorage.theme="dark",document.documentElement.classList.add("dark"),document.getElementById("dark").classList.add("hidden"),document.getElementById("light").classList.remove("hidden"),document.getElementById("syntax_highlight").href="/syntax-dark.css")}function toggleSidebar(){let e=document.getElementById("sidebar");[...e.classList].includes("translate-x-0")?(document.body.style.removeProperty("overflow"),e.classList.remove("translate-x-0"),e.classList.add("-translate-x-full")):(document.body.style.setProperty("overflow","hidden"),e.classList.remove("-translate-x-full"),e.classList.add("translate-x-0"))}function toggleMobileMenu(){let e=document.querySelector("#mobile-menu div.nav-links");[...e.classList].includes("h-screen")?(document.body.classList.remove("overflow-hidden","relative"),document.documentElement.classList.remove("overscroll-none"),e.classList.remove("h-screen"),e.classList.add("h-0")):(document.body.classList.add("overflow-hidden","relative"),document.documentElement.classList.add("overscroll-none"),e.classList.remove("h-0"),e.classList.add("h-screen"))}document.addEventListener("DOMContentLoaded",function(){var e=document.querySelectorAll(".nav-links a");let t=window.location.href.replace(/\/$/,"");e=[...e].filter(e=>e.href===t||e.href===window.location.href);if(0!==e.length)for(var d of e)d.className="bg-gray-900 text-white px-3 py-2 rounded-md text-sm font-medium";"dark"===localStorage.theme||!("theme"in localStorage)&&window.matchMedia("(prefers-color-scheme: dark)").matches?(document.documentElement.classList.add("dark"),document.getElementById("dark").classList.add("hidden"),document.getElementById("syntax_highlight").href="/syntax-dark.css"):(document.documentElement.classList.remove("dark"),document.getElementById("light").classList.add("hidden"),document.getElementById("syntax_highlight").href="/syntax-light.css"),document.getElementById("switch-theme").addEventListener("click",switchTheme),document.getElementById("toggle-sidebar").addEventListener("click",toggleSidebar),document.getElementById("toggle-mobile-menu").addEventListener("click",toggleMobileMenu)});
\ No newline at end of file
+function switchTheme(){"dark"==([...document.documentElement.classList].includes("dark")?"dark":"light")?(localStorage.theme="light",document.documentElement.classList.remove("dark"),document.getElementById("light").classList.add("hidden"),document.getElementById("dark").classList.remove("hidden"),document.getElementById("syntax_highlight").href="/syntax-light.css"):(localStorage.theme="dark",document.documentElement.classList.add("dark"),document.getElementById("dark").classList.add("hidden"),document.getElementById("light").classList.remove("hidden"),document.getElementById("syntax_highlight").href="/syntax-dark.css")}function toggleSidebar(){let e=document.getElementById("sidebar");[...e.classList].includes("translate-x-0")?(document.body.style.removeProperty("overflow"),e.classList.remove("translate-x-0"),e.classList.add("-translate-x-full")):(document.body.style.setProperty("overflow","hidden"),e.classList.remove("-translate-x-full"),e.classList.add("translate-x-0"))}function toggleMobileMenu(){let e=document.querySelector("#mobile-menu div.nav-links");[...e.classList].includes("h-screen")?(document.body.classList.remove("overflow-hidden","relative"),document.documentElement.classList.remove("overscroll-none"),e.classList.remove("h-screen"),e.classList.add("h-0")):(document.body.classList.add("overflow-hidden","relative"),document.documentElement.classList.add("overscroll-none"),e.classList.remove("h-0"),e.classList.add("h-screen"))}document.addEventListener("DOMContentLoaded",function(){var e=document.querySelectorAll(".nav-links a");let t=window.location.href.replace(/\/$/,"");e=[...e].filter(e=>e.href===t||e.href===window.location.href);if(0!==e.length)for(var d of e)d.className="bg-gray-900 text-white px-3 py-2 rounded-md text-sm font-medium";"dark"===localStorage.theme||!("theme"in localStorage)&&window.matchMedia("(prefers-color-scheme: dark)").matches?(document.documentElement.classList.add("dark"),document.getElementById("dark").classList.add("hidden"),document.getElementById("syntax_highlight").href="/syntax-dark.css"):(document.documentElement.classList.remove("dark"),document.getElementById("light").classList.add("hidden"),document.getElementById("syntax_highlight").href="/syntax-light.css"),document.getElementById("switch-theme")?.addEventListener("click",switchTheme),document.getElementById("toggle-sidebar")?.addEventListener("click",toggleSidebar),document.getElementById("toggle-mobile-menu")?.addEventListener("click",toggleMobileMenu)});
\ No newline at end of file