diff --git a/web/chat/chat-input-bar.react.js b/web/chat/chat-input-bar.react.js
--- a/web/chat/chat-input-bar.react.js
+++ b/web/chat/chat-input-bar.react.js
@@ -345,8 +345,10 @@
 
   onKeyDown = (event: SyntheticKeyboardEvent<HTMLTextAreaElement>) => {
     if (event.keyCode === 13 && !event.shiftKey) {
-      event.preventDefault();
-      this.send();
+      if (this.textarea?.value.trim() || this.multimediaInput?.value.trim()) {
+        event.preventDefault();
+        this.send();
+      }
     }
   };