I’m encountering problem Error: Assertion Failed: expected container not to be destroyed in the test i am archiving section which is successfully done

I am trying to do an ’ember build’ in a a ’ember new project’ but i am getting all the time this strange message.

Currently there is an input field that displays a search drop down as soon as I click on it , but If I store the field as a global variable and try temp1.select() in chrome console ( temp1 is the name of the global variable) it does not work
However this works when the tab is in the background(not the current tab I am viewing), when I go to the current tab the drop down is already open

I have an Ember.js application, and I have a route called parent/child. When I render the parent/child template, I only want the content inside the parent/child template to be displayed. I don’t want the contents from the parent template to be rendered. How can I achieve this?