Updated ChatWindow.tsx to fix duplicate error messages by removing the onError call from the catch block.

ChatWindow.tsx

@@ -0,0 +1,6 @@
+try {
+    // Your code logic here
+} catch (error) {
+    setChatError(error.message);
+    setMessages(prev => [...prev, { text: error.message, type: 'error' }]);
+}