I'm experiencing a persistent 404 error after admin login in a CodeIgniter 4.5.0+ application on LiteSpeed server. The initial fix didn't resolve the issue, so I need deeper investigation. Current Situation: ✅ Login works correctly at /admin/login ✅ Session saves successfully (using DatabaseHandler, verified in ci_sessions table) ✅ User gets redirected to /admin/services after login ❌ Both /admin/services AND /index.php/admin/services return 404 ❌ This suggests routes aren't being registered at all, not just an .htaccess issue What We've Tried (Didn't Work): ✅ Fixed AdminFilter.php to include proper return null; statements (verified 5 instances) ✅ Changed session handler from FileHandler to DatabaseHandler ✅ Modified AdminRoutes.php line 12 from config('AppConfig') to new \Config\AppConfig() ✅ Simplified .htaccess to match working development server ✅ Verified all route files exist and are syntactically correct Critical Discovery: Running diagnostic scripts shows: ✅ All files exist (AdminRoutes.php, ServicesController.php, etc.) ✅ AdminRoutes::init() is called in Routes.php (line 25) ✅ AdminFilter has correct implementation ✅ .htaccess has correct RewriteEngine rules ❌ Routes are NOT being loaded/registered - both URLs with and without index.php fail This means the problem is likely: AdminRoutes::init($routes) is being called but throwing a silent exception The $routes object isn't being passed correctly There's a namespace/autoloading issue preventing route registration CodeIgniter's routing system isn't executing AdminRoutes::init() properly on LiteSpeed What I Need You To Do: Add error logging to AdminRoutes.php to see if init() executes: Check if routes are actually registered by creating a debug endpoint: Verify the route collection contains admin routes after AdminRoutes::init() is called Check error logs on the server (usually in logs or server error log) for any exceptions during route loading Server Details: Server: LiteSpeed (shared hosting at Hostinger) PHP: 8.2.29 CodeIgniter: 4.5.0+ (using new Boot.php, not deprecated bootstrap.php) Database: MySQL with ci_sessions table verified working Domain: purafama.cl (HTTPS enabled) Files Already Modified (attached): AdminRoutes.php - Changed to direct instantiation App.php - DatabaseHandler for sessions AdminFilter.php - Proper return statements .htaccess - Simplified rules Expected Behavior: After login, user should access /admin/services successfully and see the services management page. Actual Behavior: 404 error on ALL admin routes, including when accessed directly with index.php prefix. Please investigate why routes aren't being registered and provide a solution. This is blocking the entire admin panel. Let me know what you find in the logs and if you need FTP/SSH access to debug directly. Thanks!