关于nextjs-notion安装vercel时出错的求助

[leftchest]

本人小白一个，看到transitive-bullshit的教程，成功安装，后来看到您修改过的代码，也按照前述安装方法，结果安装时候出错，错误提示如下，还请不吝赐教（安装过程，就是修改id那个文件里面内容后，通过vercel网页选择github仓库，然后一路默认安装的）。

` 00:18:59.485

Build error occurred 00:18:59.486 Error: Config error: missing required env variable "GCLOUD_PROJECT" 00:18:59.486 at getEnv (/vercel/path0/.next/server/pages/_app.js:226:9) 00:18:59.486 at Object.MMqm (/vercel/path0/.next/server/pages/_app.js:304:25) 00:18:59.486 at webpack_require (/vercel/path0/.next/server/pages/_app.js:23:31) 00:18:59.487 at Module.cha2 (/vercel/path0/.next/server/pages/_app.js:490:14) 00:18:59.487 at webpack_require (/vercel/path0/.next/server/pages/_app.js:23:31) 00:18:59.487 at Object.2 (/vercel/path0/.next/server/pages/_app.js:106:18) 00:18:59.487 at webpack_require (/vercel/path0/.next/server/pages/_app.js:23:31) 00:18:59.487 at /vercel/path0/.next/server/pages/_app.js:91:18 00:18:59.487 at Object. (/vercel/path0/.next/server/pages/_app.js:94:10) 00:18:59.487 at Module._compile (internal/modules/cjs/loader.js:1063:30) 00:18:59.488 at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10) 00:18:59.488 at Module.load (internal/modules/cjs/loader.js:928:32) 00:18:59.488 at Function.Module._load (internal/modules/cjs/loader.js:769:14) 00:18:59.488 at Module.require (internal/modules/cjs/loader.js:952:19) 00:18:59.488 at require (internal/modules/cjs/helpers.js:88:18) 00:18:59.488 at requirePage (/vercel/path0/node_modules/next/dist/next-server/server/require.js:1:1184) 00:18:59.537 error Command failed with exit code 1. 00:18:59.538 info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command. 00:18:59.555 Error: Command "yarn run build" exited with 1`