Stuck: Laravel Error `Class 'App\Http\Controllers\SomeClass' not found` After Composer Update – Help!

I'm completely stuck trying to fix a persistent Laravel issue after a Composer update and I've been at this for hours. My app keeps throwing a Class not found error, and I've tried everything I can think of.

Here's the error I'm seeing:

[2023-10-27 10:30:00] local.ERROR: Class 'App\\Http\\Controllers\\SomeClass' not found {"exception":"[object] (Symfony\\Component\\Debug\\Exception\\FatalThrowableError(code: 0): Class 'App\\\\Http\\\\Controllers\\\\SomeClass' not found at /var/www/html/vendor/laravel/framework/src/Illuminate/Container/Container.php:879)\\n[stacktrace]\\n#0 /var/www/html/vendor/laravel/framework/src/Illuminate/Container/Container.php(756): Illuminate\\Container\\Container->build('App\\\\Http\\\\Contro...')\\n#1 /var/www/html/vendor/laravel/framework/src/Illuminate/Container/Container.php(657): Illuminate\\Container\\Container->resolve('App\\\\Http\\\\Contro...', Array)\\n#2 /var/www/html/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(735): Illuminate\\Container\\Container->make('App\\\\Http\\\\Contro...', Array)\\n#3 /var/www/html/app/Http/Kernel.php(174): Illuminate\\Foundation\\Application->make('App\\\\Http\\\\Contro...', Array)\\n#4 /var/www/html/vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php(43): App\\\\Http\\\\Kernel->handle(Object(Illuminate\\Http\\Request))\\n... (truncated for brevity) ...\\n"}

What am I missing? Any quick fix insights for this Laravel error would be a lifesaver. Help a brother out please...