Ok, I am also using php 8, $go_debug=2 and not getting this error. I am an old C and C++ programmer and these languages always take care of old versions (backward compatible), so I am getting really weird of this php language.
We will simply change the function in pdf_report.inc.
We still have some other issues in php 8. Working on it. One of them is crediting in Customer Transactions.. Not reading the original invoice.
So please do NOT use php 8 seriously yet.
Joe
