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I've recently updated my Angular project from 8 to 9. It worked fine on my machine. I tried copying the files and assembling them on another device. While doing npm install I am getting the following error.

I tried removing package.lock.json and removing the node_modules folder completely and tried many times. But nothing worksenter image description here

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  • Did you find any solution? I'm stuck on same problem Commented Mar 30, 2020 at 13:37
  • remove node_modules folder and try installing your dependencies with yarn instead of npm. Commented Apr 7, 2020 at 10:52
  • Have you tried removing the --create-ivy-entry-points flag? The docs at angular.io/guide/ivy say: "Don't use --create-ivy-entry-points as this will cause Node not to resolve the Ivy version of the packages correctly." Commented Apr 22, 2020 at 20:44
  • Found a solution for this? Commented Jun 16, 2020 at 13:34
  • I have same problem upgrading from Angular 9 to 10 .. Seems like my package.json had a script "postinstall": "ngcc --properties es2015 browser module main --first-only --create-ivy-entry-points" .. this is run everytime 'npm install' is run. This can be modified to possibly fix whatever problem it is. Commented Jul 20, 2020 at 11:57

1 Answer 1

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  1. open Powershell as Administrator
  2. cd yourProjectPath
  3. npm i
  4. ng serve
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