Component list is not appearing on page. I have added these components in design mode. still it's not working. below is the error i'm getting while adding components.
Uncaught TypeError: Cannot read property 'getPath' of undefined
at ns.ui.EditableDragAndDrop.isInsertAllowed (core.js:27946)
at executeListener (core.js:5866)
at Object.onEnter [as enter] (core.js:5962)
at Interaction._execute (core.js:5123)
at Interaction._onMove (core.js:5375)
at HTMLDocument.dispatch (jquery.js:4665)
at HTMLDocument.elemData.handle (jquery.js:4333).
I'm using aem 6.2 service pack1