On Joomla 4.0.2 the extension SP Simple Portfolio instead to show items pages show Joomla pages.
See the links below and click one of the projects (button "Vedi" on images).
I copied and pasted the 2 DB Tables from the visible cms version:
xxxx_sppagebuilder
xxxx_spsimpleportfolio_items
Thank's a lot for your help,
Lele