Webappbuilder 2.2 version, could not edit after changing placement of widgets

[SubodhDhakal1]

Hi,

I am using version 2.2 and have come across very strange problem. As soon as I change the theme to Tab style and placement of Basemap gallery and Info widget on side bar, i come up with trouble, not sure why. when i refresh the page all i get is like snippets below and i wont be able to edit any further from this point. I could still access the website from local host but not able to edit at all. Any one please help?