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:
2phase-commit
pyrebase
ocsp
base-class
device-emulation
android-multi-module
runkit
pls
pact-lang
servletcontextlistener
db-first
aws-session-manager
mixim
onsen-ui2
mongoose-sequence
license-key
nsarray
scroll-position
gulp-babel
nstableviewcell
specflow
active-directory
uiswipegesturerecognizer
cglib
duktape
specs
scout-sass
gulp
apache2-module
versions