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:
netpbm
jetbrains-gateway
angular2-di
airplay
text-size
cpu-usage
scipy-optimize-minimize
bit-fields
salesforce
eula
custom-notification
draw2d
retina
libgit2
node-sass-chokidar
pyexiv2
iab
fine-tune
opends
trailing
libpqxx
hipaa
vagrant
locals
simplehttpserver
rubocop
has-and-belongs-to-many
ankhsvn
spring-logback
qa-c