Re: Internal Engine error After Upgrade to Qliksense Jun 2019
I have about the same issue.
After upgrading from Qlik Sense April 2019, to Qlik Sense June 2019 I get "An error occurred"/"Concention to the Qlik Sense engine failed for unspecified reasons. Refresh your browser or contact your system administrator."
I've logged a case 27/6-2019 at support.qlik.com, but there isn't found a solution for it yet.