运行 NPM run watch-poll 出错

已经按照window10出错的教程走了一遍，还是有下面的错误：

npm ERR! file /home/vagrant/code/laravel-shop/package.json
npm ERR! code EJSONPARSE
npm ERR! JSON.parse Failed to parse json
npm ERR! JSON.parse Unexpected token / in JSON at position 28 while parsing near '...rivate": true,
npm ERR! JSON.parse      // "scripts": {
npm ERR! JSON.parse     ...'
npm ERR! JSON.parse Failed to parse package.json data.
npm ERR! JSON.parse package.json must be actual JSON, not just JavaScript.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/vagrant/.npm/_logs/2019-07-13T14_31_55_341Z-debug.log