--- CourseController.php.backup
+++ CourseController.php
@@ -1474,6 +1474,11 @@
     public function verifyTestCases(Request $request)
     {
         try {
+            // Debug logging
+            \Log::info("=== VERIFY TESTCASES CALLED ===");
+            \Log::info("Request data:", $request->all());
+            \Log::info("Session ID: " . session()->getId());
+            \Log::info("Has student session: " . (session()->has("student") ? "YES" : "NO"));
             // Debug logging
             Log::info('verifyTestCases called', [
                 'request_data' => $request->all(),