Laravel & supervisord

I have a issue with supervisor, basically hen i try to start command

'supervisorctl start all'

and i get

`bank-worker:bank-worker_00: ERROR (spawn error)`

The error im getting is

'PHP Fatal error:  Uncaught ReflectionException: Class App\Exceptions\Handler does not exist in /var/www/html/bkn/ve$
Stack trace:
#0 /var/www/html/bkn/vendor/laravel/framework/src/Illuminate/Container/Container.php(752): ReflectionClass->__const$
#1 /var/www/html/bkn/vendor/laravel/framework/src/Illuminate/Container/Container.php(631): Illuminate\Container\Con$
#2 /var/www/html/bkn/vendor/laravel/framework/src/Illuminate/Container/Container.php(586): Illuminate\Container\Con$
#3 /var/www/html/bkn/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(721): Illuminate\Container\$
#4 /var/www/html/bkn/vendor/laravel/framework/src/Illuminate/Container/Container.php(256): Illuminate\Foundation\Ap$'

via Chebli Mohamed