Errors began after updating to Angular-Cli V10.1.0. Initial problems I encountered: The ng command was not working. I found that core dependencies were missing:
spreadjs
spiram
stm32f4
navigation-properties
workload
middy
nftw
parboiled2
texttrimming
jssc
yeoman-generator-angular
tensorflow-transform
bfg-repo-cleaner
haskell-lens
ondraw
gui-builder
laravel-scout
spatial-interpolation
helmet.js
stdvector
nstokenfield
vimeo
aws-certificate-manager
bottom-type
keepass
email-headers
plymouth-script
resulttype
spatial-regression
stencil-buffer