php start.php start -d

config/app.php
return [
    'debug'             => getenv('APPDEBUG'),
    'error_reporting'   => E_ALL,
    'default_timezone'  => 'Asia/Shanghai',
    'request_class'     => Request::class,
    'public_path'       => base_path() . DIRECTORY_SEPARATOR . 'public',
    'runtime_path'      => base_path(false) . DIRECTORY_SEPARATOR . 'runtime',
    'controller_suffix' => 'Controller',
    'controller_reuse'  => false,
];

.env
APPDEBUG  = 0