解决办法是:用cnpm安装
admin@DESKTOP-4B9537R MINGW64 /d/WorkSpace/My/Nuxt/learn (master)
$ npx nuxi@latest module add @nuxtjs/i18n
at async Engine.executePackageManagerRequest (D:\nvm\v20.14.0\node_modules\corepack\dist\lib\corepack.cjs:23528:47)
at async Object.runMain (D:\nvm\v20.14.0\node_modules\corepack\dist\lib\corepack.cjs:24235:5)
Node.js v20.14.0
ERROR corepack pnpm add @nuxtjs/i18n@9.5.3 failed. nuxi 21:34:06
at executeCommand (/C:/Users/admin/AppData/Local/npm-cache/_npx/b95349761371180e/node_modules/nuxi/dist/shared/nuxi.DigSKSZu.mjs:600:11)
at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
at async addDependency (/C:/Users/admin/AppData/Local/npm-cache/_npx/b95349761371180e/node_modules/nuxi/dist/shared/nuxi.DigSKSZu.mjs:803:3)
at async addModules (/C:/Users/admin/AppData/Local/npm-cache/_npx/b95349761371180e/node_modules/nuxi/dist/chunks/add2.mjs:186:19)
at async Object.setup (/C:/Users/admin/AppData/Local/npm-cache/_npx/b95349761371180e/node_modules/nuxi/dist/chunks/add2.mjs:153:5)
at async runCommand$1 (/C:/Users/admin/AppData/Local/npm-cache/_npx/b95349761371180e/node_modules/nuxi/dist/shared/nuxi.DCVnYqfZ.mjs:1739:5)
at async runCommand$1 (/C:/Users/admin/AppData/Local/npm-cache/_npx/b95349761371180e/node_modules/nuxi/dist/shared/nuxi.DCVnYqfZ.mjs:1758:11)
at async runCommand$1 (/C:/Users/admin/AppData/Local/npm-cache/_npx/b95349761371180e/node_modules/nuxi/dist/shared/nuxi.DCVnYqfZ.mjs:1758:11)
at async runMain$1 (/C:/Users/admin/AppData/Local/npm-cache/_npx/b95349761371180e/node_modules/nuxi/dist/shared/nuxi.DCVnYqfZ.mjs:1896:7)
✔ Install failed for `@nuxtjs/i18n@9.5.3`. Do you want to continue adding the module to nuxt.config?
No
✔ Types generated in .nuxt