Fixed kokoro loading process.

public/index.html

@@ -281,16 +281,20 @@
     <script>
         // Redefine console.log to expose browser logs to model
         const originalLog = console.log;
-        console.log = function(message) {
+        console.log = function(...args) {
             if (typeof debug !== 'undefined' && debug) {
                 const debugContent = document.getElementById('debug-content');
                 if (debugContent) {
                     const logMsg = document.createElement('div');
-                    logMsg.textContent = message;
+                    // Convert all arguments to string and join them
+                    logMsg.textContent = args.map(arg => 
+                        typeof arg === 'object' ? JSON.stringify(arg) : String(arg)
+                    ).join(' ');
                     debugContent.appendChild(logMsg);
                 }
             }
-            originalLog(message);
+            // Pass all arguments to the original console.log
+            originalLog.apply(console, args);
         };
     </script>
     <script type="module" src="/js/loader.js"></script>