kailin/resources/lang/en/api_access.php

<?php

return [
    'sign_miss'         => 'sign miss',
    'sign_error'        => 'sign error',
    'appid_miss'        => 'appid miss',
    'nonce_miss'        => 'random string param miss',
    'sign_timeout'      => 'sign is timeout',
    'appid_nofund'      => 'appid is not exists',
    'appkey_no_allow'   => 'appkey no allow',
    'sign_used'         => 'sign is used',
];