1.在Cursor中按快捷键F1，调出控制台查看报错信息

2.发现域名连接失败

原商店域名为:https://marketplace.cursorapi.com

3.更改商店源，找到product.json文件

  "extensionsGallery": {
    "serviceUrl": "https://marketplace.visualstudio.com/_apis/public/gallery",
    "cacheUrl": "https://vscode.blob.core.windows.net/gallery/index",
    "itemUrl": "https://marketplace.visualstudio.com/items",
    "controlUrl": "",
    "recommendationsUrl": ""
  }

将https://marketplace.cursorapi.com替换为https://marketplace.visualstudio.com，随后正常