Seme4 Platform
We’re relying on (ancient) EasyRDF, which has not been well maintained in recent years.
Also now running PHP 8.3 which is a lot fussier about type-hinting function arguments and return values, which causes all kinds of issues with legacy code.
There’s a script php8-fixes.php that somewhat crudely applies changes to fix some errors and shut up the warnings… it’s a bit of a horror show and probably needs revisiting in the course of time. Shout if you see any deprication warnings in use!
See also platform setup though it’s very old!