Theme "name" is assigned to the app but was not found on the server at collection time.
A custom theme named "name" is assigned to the app. The theme was not found to be installed on the server during collection time. Possible causes may be:
•The theme was deleted from the server.
•The app was imported from another server that had the theme installed, but the theme is not installed on the current server.
Instructions for installing a theme in your Qlik Sense environment can be found here:
Qlik Sense Enterprise on Windows / Qlik Sense Desktop
Qlik Sense SaaS / Qlik Sense Business
Help for creating your own custom theme can be found at SenseTheme.com.