PHP Parse error: syntax error, unexpected '?' in /lib/pkp/lib/vendor/illuminate/support/Str.php on line 681

@Jvil, I see you’ve also posted this as a new topic. I’ll close this thread in favour of that one. In general, it’s best to post a question just once in the place you think best – otherwise it might duplicate support effort.

Regards,
Alec Smecher
Public Knowledge Project Team