Visual studio phpcs&x2014；Wordpress编码标准在Visual Studio中不起作用

我在visual studio中遇到此错误：

phpcs: The "WordPress" coding standard is not installed. Please review your configuration an try again.

在

settings.json

中：

    "php.suggest.basic": true,
    "php.validate.run": "onSave",
    "php.validate.executablePath": "/usr/bin/php",
    "phpcs.enable": true,
    "phpcs.executablePath": "/Users/xxx/.composer/vendor/bin/phpcs",
    "phpcs.standard": "WordPress"

在终端：

$ which phpcs
$ /Users/xxx/.composer/vendor/bin/phpcs
$ which php
$ /usr/bin/php
$ phpcs --config-show
Using config file: /Users/xxx/.composer/vendor/squizlabs/php_codesniffer/CodeSniffer.conf
installed_path: /Users/xxx/.composer/vendor/wp-coding-standards/wpcs

我做错了什么