我想在螺栓管理界面中安装扩展。当我打开网页就得到我的这个错误：螺栓中的类型错误CMS

An unknown error occurred. This was the error message: JSON.parse: unexpected character at line 1 column 1 of the JSON data

在页面的控制台看着我得到：

TypeError: n.error is undefined [Learn More] bolt.js:9:20734
n >http://localhost/bolt-public/js/bolt.js:9:20734
o/ http://localhost/bolt-public/js/bolt.js:9:23517
l >http://localhost/bolt-public/js/lib.js:1:37033
fireWith >http://localhost/bolt-public/js/lib.js:1:37801
r >http://localhost/bolt-public/js/lib.js:1:74124
n/< >http://localhost/bolt-public/js/lib.js:1:79953

在这个文件中，我发现：

/** 
* These are Bolt’s COMPILED JS files! 
* Do not edit this file, because all changes will be lost. You can edit the 
* `*.js` files in `app/src/js/` and then run `yarn grunt updateBolt` to generate 
* this file. You will need to use the "Clone the Git Repository" installation method, to 
* get these files. See: https://docs.bolt.cm/core-development/install-git-clone, 
* as well as the `README.md` file in the `app/src/` folder. 
*/ 

那么除了手动安装扩展之外，我还能做什么？如果我这样去，我也不能更新Bolt。