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:
nomad
locking
git-track
ggmap
mdbtools
deferred-loading
moonsharp
blackberry-qnx
node-rsa
contract
listlabel
matlab-compiler
lpt
growl
ijson
pyudev
cachemanager
timeunit
inputconnection
vue-router
android-tabbed-activity
system.io.directory
openmrs
ddf
daphne
redeclaration
value-iteration
webusb
pidgin
pyclipper