I'm using a custom master paged based off of oslo. When i made the master page I copied the oslo.html file and added breadcrumb navigation. When I go to "Add an app" I get stuck at this loading screen:
I was looking at this site and it said I need to add certain line to my master page. When I looked through my master page I saw that these lines where already in the code the exact way specified. I'm not sure what I need to do to get the "Add an app" working again.
Note: When I switch site to the OOTB Oslo I can load the apps.