Fixed Javascript crash caused by hidden HTML element

website/index.html

@@ -1215,7 +1215,7 @@ const chatStatus = document.getElementById('chat-status');
 const chatStatusText = document.getElementById('chat-status-text');
 const chatProgressFill = document.getElementById('chat-progress-fill');
 const chatSteps = document.getElementById('chat-steps');
-const chatRouteLabel = document.getElementById('chat-route-label');
+const chatRouteLabel = document.getElementById('chat-route-label') || document.createElement('span');
 
 let chatBusy = false;
 let chatProgressTimer = null;