"@vue-office/excel". The package may have incorrect main/module/exports specified in its package.json.

根据提供的引用内容，如果在使用"@vue-office/excel"包时出现了错误提示"Failed to resolve entry for package "@vue-office/excel". The package may have incorrect main/module/exports specified in its package.json."，可以尝试修改package.json文件中的"module"字段的值。

将"module"字段的值从"./dist/index.es.js"改为"./dist/index.mjs"，然后重新运行项目，看是否能够解决该错误。

这是一个修改package.json文件的示例：

{
  "name": "@vue-office/excel",
  "version": "1.0.0",
  "main": "./dist/index.js",
  "module": "./dist/index.mjs",
  "exports": {
    ".": {
      "require": "./dist/index.js",
      "import": "./dist/index.mjs"
    }
  },
  "dependencies": {
    // 依赖项
  }
}

请注意，具体的修改方式可能因项目而异，需要根据实际情况进行调整。