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:
azure-aks
queryparam
library-project
partials
nagiosxi
ucos
azure-sphere
update-site
nservicebus
fireworks
salt-creation
bootstrap-notify
recurly
qt5.13
ruby-watir
angularjs-digest
mathematical-notation
nixos
scrollviewreader
page-jump
aws-fis
nsnotification
itsdangerous
gaussianblur
errno
dock
htmltidy
pymatgen
coverlet
commodore