diff --git a/admin/DashboardController.php b/admin/DashboardController.php
index 012ae26..138f4e9 100644
--- a/admin/DashboardController.php
+++ b/admin/DashboardController.php
@@ -2116,10 +2116,12 @@ function formatDate(d) {
 
 // ─── Auto-resize textarea ────────────────────────────────────────────────────
 const msgInput = document.getElementById('msgInput');
-msgInput.addEventListener('input', function() {
-  this.style.height = 'auto';
-  this.style.height = Math.min(this.scrollHeight, 120) + 'px';
-});
+if (msgInput) {
+  msgInput.addEventListener('input', function() {
+    this.style.height = 'auto';
+    this.style.height = Math.min(this.scrollHeight, 120) + 'px';
+  });
+}
 
 loadConvs();
 setInterval(loadConvs, 15000);