I am currently running version 6.0.11. it is working.
I tried a Composer install of version 6.0.16.
When I try to access the reportico page ( https:://sale4cast.org/reportico) I am getting a blank page. The server logs do not show any error. But the Mozilla web console shows a ' 500 Internal server error'.
Server is a vhost running Ubuntu 20.04 LTS, php versions 5.6, 7.0. 7.1, 7.4. Active is PHP 5.6.
I have the same issue with running it on a local Windows 10 desktop.
Any idea how to tackle ?