Update static/index.html

static/index.html

@@ -147,7 +147,9 @@
                 const botMessage = data.response;
                 addMessage("Bot", botMessage, "bot-message");
                 chatHistoryArray.push({ sender: "Bot", message: botMessage });
-                playAudio(data.audioUrl);
+                if (data.audioUrl) {
+                    playAudio(data.audioUrl);
+                }
             } catch (error) {
                 botTyping.remove();
                 console.error("Error:", error);