This is frequently asked question about the cascader component. Adding a FAQ section would help more users who have the same problem.

https://stackoverflow.com/questions/60320913/ng-zorro-cascader-lazy-load-data-nzloaddata-function-got-this-undefined/60928983#60928983

On the web, the sidebar menu right now completely closes or opens. It should have a third state which is it should be halfway with icons visible. Task is to:

• Add icons to the menu items where it isn't there
• Make sure those icons are visible in the minimized version of it
• Desktop: Clicking the hamburger should take through steps viz. Open, minimize, collapse
• Mobile: Open, Close

HINT