The Joomla 5 updates for sites using Helix Ultimate v 2.16 coming ( https://ufile.io/goqbu8jt ) I have the new version in the Joomshaper forum see link below and new Joomla 5 with updated SP Pagebuilder Pro working with compability plg and settings.
https://www.joomshaper.com/forum/question/28199
"Thks tried the file here for Helix Ultimate Joomla 5 support and seems to work with Joomla 5 compability support but not if you disable that "Behaviour - Backward Compatibility" plg for Joomla 5 compatiblity support.
There is a bug
"0 Class "JText" not found bug error" there for ---> Classes Aliases
Works if you have enabled the Behaviour - Backward Compatibility" plg with these settings.
So problem seems with the Classes Aliases."
(Oh, BIG thanks, tomorrow dev will check those and decide.
Hopefully, all users by default has enabled all those 3 so don't see any error. And only very advanced webmaster check so deeply, and play with on-off to check what would happen after. But sure it would be great to correct that soon, before J5.0.x will start to be popular.)