messages do not send anymore. and these errors poped up: index.html:540 Uncaught ReferenceError: updateRegenerateButton is not defined at renderMessages (index.html:540:13) at loadChat (index.html:483:13) at HTMLDivElement.<anonymous> (index.html:385:61) renderMessages @ index.html:540 loadChat @ index.html:483 (anonymous) @ index.html:385 index.html:540 Uncaught (in promise) ReferenceError: updateRegenerateButton is not defined at renderMessages (index.html:540:13) at sendMessage (index.html:568:13) at HTMLFormElement.<anonymous> (index.html:925:13) - Follow Up Deployment

index.html

@@ -537,7 +537,6 @@
             
             chatArea.appendChild(messagesContainer);
             chatArea.scrollTop = chatArea.scrollHeight;
-            updateRegenerateButton();
         }
 
         // Send message
@@ -545,9 +544,13 @@
             const message = messageInput.value.trim();
             if (!message || !currentChatId) return;
             
-            // Check if we need API key for OpenAI model
-            const chat = chats.find(c => c.id === currentChatId);
+            // Get current chat
+            const chatIndex = chats.findIndex(c => c.id === currentChatId);
+            if (chatIndex === -1) return;
+            
+            const chat = chats[chatIndex];
             const model = models.find(m => m.id === chat.model);
+            if (!model) return;
             
             if (model.type === 'default' && !localStorage.getItem('openaiApiKey')) {
                 showApiKeyModal();
@@ -592,6 +595,11 @@
                 const model = models.find(m => m.id === chat.model);
                 if (!model) throw new Error('Model not found');
                 
+                // Ensure we have the latest chat reference
+                const chatIndex = chats.findIndex(c => c.id === currentChatId);
+                if (chatIndex === -1) throw new Error('Chat not found');
+                const chat = chats[chatIndex];
+                
                 // Prepare messages for API
                 const messages = chat.messages.map(msg => ({
                     role: msg.role,