Stuck on a critical Laravel application development bug!

I'm completely stuck and tearing my hair out over here! We just finished a major feature for our Laravel application development project, and I thought we were golden, but now I'm facing a critical deployment blocker. After running composer update and php artisan optimize, the entire application refuses to boot, throwing a persistent 'Class Not Found' error.

I’ve tried literally everything I can think of: composer dump-autoload, php artisan config:clear, cache:clear, and even view:clear multiple times. I've double-checked namespaces, file paths, and even permissions, but nothing seems to resolve it. The class definitely exists at the specified path, and everything was working perfectly before the update. It feels like Composer or Laravel's autoloader is just refusing to acknowledge its existence.

[2024-07-26 10:30:15] local.ERROR: Class "App\Http\Controllers\NewFeature\AnalyticsController" not found {"exception":"[object] (Error(code: 0): Class \"App\Http\Controllers\NewFeature\AnalyticsController\" not found at /var/www/html/vendor/laravel/framework/src/Illuminate/Container/Container.php:879)
[stacktrace]
#0 /var/www/html/vendor/laravel/framework/src/Illuminate/Container/Container.php(879): ReflectionClass->__construct('App\\Http\\Contro...')
#1 /var/www/html/vendor/laravel/framework/src/Illuminate/Container/Container.php(756): Illuminate\Container\Container->build('App\\Http\\Contro...')
#2 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(870): Illuminate\Container\Container->resolve('App\\Http\\Contro...', Array, true)
#3 /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php(48): Illuminate\Foundation\Application->make('App\\Http\\Contro...')
#4 /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Route.php(260): Illuminate\Routing\ControllerDispatcher->dispatch(Object(Illuminate\Routing\Route), Object(App\Http\Controllers\NewFeature\AnalyticsController), 'index')
#5 /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/Route.php(203): Illuminate\Routing\Route->runController()
... (truncated for brevity)
"}

What else could possibly be causing this baffling 'Class Not Found' error in a Laravel application, and how can I fix it quickly? I'm completely out of ideas.