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:
atlassian-crucible
matplotlib-animation
ddd-repositories
register-transfer-level
server-sent-events
video
xslf
quarkusintegrationtest
libtins
sandcastle
iup
angular-template
protoc-gen-openapiv2
x-frame-options
wordnet
shutterstock
vip-architecture
iis-advanced-logging
heterogeneous
pycaffe
sumologic
workflow-foundation
mdpi
expandablelistview
unidecoder
graphviz
auto-update
parallelstream
dynamic-linq
lpc