First, you will have to remove the npm cache and upgrade to the latest version of the node and npm will resolve the issue.

sudo npm cache clean -f
sudo npm install -g n install n 
sudo n stable 

The first command will force clean the npm package manager's cache, After the second and third commands, a stable version of the node and npm will be installed. then you can execute **npm i** and **npm run build** for creating an optimized production build.

This solution worked for the same error on the **npm run build** command in nextjs.