The sideview_utils apps and example_view view works fine, i can do all these add/edit etc
But once i switch the App to other app and other view, it totally cannot work
I can type word inside "Choose a module to edit", but i cant select a module to edit
hmm. . That's the error you would get if you submitted the "Add new module" panel without clicking a module in the schematic pane.
Can you break down when and how you're getting that error? Are you clicking a module in the schematic panel (the upper right pane showing modules as boxes and upstream/downstream relationships as lines)? When you click a module in the schematic pane is the "add a new module below" field not populating? It should populate with a weird looking value like "Search_0_2_0", but one way or another for you the form is submitting with that field blank.