Suddenly the preview of the navigation graph just dissapear. After a deep research I figure out this problem was triggered right after adding the amplify depend
asp.net-mvc-custom-filter
pygresql
trains
angular2-custom-pipes
patternlab.io
numpy-stl
mongoid4
observable
roottools
nsprogress
anti-debugging
cpn-tools
universe
qtpy
imagebrush
grafana-plugin
simpleaudioengine
tvos13
image-scaling
cat
sonarqube-5.5
parameter-sets
rot13
mortar
textmate2
excel-2010
ora-06512
back
semantic-logging
string-formatting