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:
apparmor
libharu
columnheader
document-provider
mime
ruby-grape
wordpress-action
azure-secrets
relaunch
httplib
angularjs-ng-model
ternary
blockingcollection
sharepoint-2016
pimpl-idiom
resthighlevelclient
oidc-client
associativity
railscasts
zalenium
constraint-kinds
jquery-selectbox
server-explorer
maven-install
csl
angular-material-8
android-9.0-pie
addtarget
underflow
nvidia-jetpack-sdk