Hi,
We cannot use Advanced Filter property since after we upgraded to version 12. When i press the plus button in Advanced Filter Definition form for example from Activities section, it generates exception error. I looked at the log file and found this:
2026-03-10 10:36:39.241 ** ERROR ** [V12.4.2] [1] EXCEPTION **
2026-03-10 10:36:39.242 ** ERROR ** [V12.4.2] [1] on file 'C:Program Files (x86)EasyPHP-Devserver-17eds-wwwprojeqtortoolhtml.php' at line (2273)
2026-03-10 10:36:39.243 ** ERROR ** [V12.4.2] [1] cause = Call to undefined function array_key_last()
2026-03-10 10:36:39.243 ** ERROR ***** [V12.4.2] [1] => #0 C:Program Files (x86)EasyPHP-Devserver-17eds-wwwprojeqtortooladdFilterClause.php (569) -> htmlDisplayFilterCriteria()
Thank you in advance
.
Hello,
This is a PHP compatibility error.(cause The array_key_last()).
You will find the prerequisites for Projeqtor 12.4.2 on the website.: https://www.projeqtor.com/en/help/#prerequisites
ProjeQtOr V12.4 and above PHP 8.0 to PHP 8.4
Have a nice day,
Hi,
Which version is currently running on the HTTP server?
Hello again,
On the main screen it is written as Apache 2.4.43 x86, but in the server configuration screen when i select that server it produces an error like Fatal error: Allowed memory size of 536870912 bytes exhausted (tried to allocate 600348845 bytes) in C:Program Files (x86)EasyPHP-Devserver-17eds-binarieshttpserverapache2443vc15x86x230313142646eds-app-dashboard.php on line 77.
The whole system works fine except advanced filter property.
Thanks you a lot.
Hi,
Is there any improvement about my problem?
Thank you in advance.




