Locally I can start a content test and preview the variant thumbnails no problem.
Sitecore 9.1.1 Azure PaaSsingle instance environment all I see are 403 errors instead of the thumbnails.
The executable path looks a little strange - but am struggling to find if this needs to be changed for Azure instance.
There is nothing in the console Network tab as to what the 403 is - whether the thumbnails are not being generated, or they were but can't be accessed.
Nothing obvious in the log, and Phantomjs.exe is located in the