[ 'token_exists' => 'Lack of authentication token', 'token_invalid' => 'Invalid authentication token', 'user_disabled' => 'The user has been disabled', 'use_json' => 'The request must be in JSON format', 'login_invalid' => 'Login expired' ], 'api' => [ 'login' => 'Please log in first', 'permission' => 'No operation permission', 'resource' => 'Resource does not exist', 'data' => 'Data validation failed', 'system' => 'System error' ], 'check' => [ 'user_auth' => 'You do not have access.' ] ];