Why does an error occur when deploying to zeit?

Question

npm

13:41:45.581 Retrieving list of deployment files... 13 :41 :
45.749 Downloading 14 deployment files ... :48.750 Looking up build cache... 13:41:48.787 Build cache not found 13:41:49.130 Installing dependencies... 13:42:01.680 > [email protected] postinstall /vercel/52eea608/node_modules/core -js 13:42:01.680 > node -e "try{require('./postinstall')}catch(e){}" 13:42:01.736 [96mThank you for using core-js ([94m https:// github.com/zloirock/core-js[96m ) for polyfilling JavaScript standard library![0m
13:42:01.736 [96mThe project needs your help! Please consider supporting of core-js on Open Collective or Patreon: [0m
13:42:01.736 [96m>[94m https://opencollective.com/core-js [0m
13:42:01.736 [96m>[94m https: //www.patreon.com/zloirock [0m
13:42:01.736 [96mAlso, the author of core-js ([94m https://github.com/zloirock [96m) is looking for a good job -)[0m
13:42:02.545 npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules/fsevents):
13:42:02.545 npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted {"os": "darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})
13:42:02.545 npm WARN optional SKIPPING OPTIONAL DEPENDENCY: [email protected] (node_modules/chokidar/node_modules/fsevents):
13:42:02.545 npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected]: wanted { "os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})
13:42:02.548 added 1122 packages from 533 contributors in 13.021 s
13:42:02.978 45 packages are looking for funding
13:42:02.978 run `npm fund` for details
13:42:03.014 Running "npm run build"
13:42:03.201 > [email protected] build /vercel/52eea608
13:42:03.201 > webpack
13:42:03.745 webpack is watching the files…
13:42:04.367 Hash:108b20bdfc5789065160
13:42:04.367 Version: webpack 4.42.1
13:42:04.367 Time: 628ms
13:42:04.367 Built at: 06/02/2020 8:42:04 AM
13:42:04.367 Asset Size Chunks Chunk Names
13:42:04.367 index.html 770 bytes [emitted] 13:42: 04.367 main.js
721 KiB main [emitted] main style.css] 358 bytes {main} [built] 13:42:04.367 [./node_modules/webpack/buildin/global.js] (webpack)/buildin/global.js 472 bytes {main} [built] 13:42 :04.367 [./src/index.js] 156 bytes {main} [built] 13:42:04.367 [./src/style.css] 561 bytes {main} [built] 13:42:04.367 + 7 hidden modules 13:42:04.367 Child HtmlWebpackCompiler:
13:42:04.367 1 asset
13:42:04.367 Entrypoint HtmlWebpackPlugin_0 = __child-HtmlWebpackPlugin_0
13:42:04.367 [./node_modules/html-webpack-plugin/lib/loader.js!./template.html] 985 bytes { HtmlWebpackPlugin_0 } [built]