npm err cb() never called angular code example

Example 1: npm ERR! cb() never called!

//try below command first and
//then again install the required package you were installing
npm cache clean
//if the above command fails run below command. 
npm cache clean --force

Example 2: cb() never called! npm ERR! This is an error with npm itself.

// run this command before running again
npm cache clean --force