Hello
when I try to edit every menu item of my J! 3.8.10/K2 2.8.0 site I get:

An error has occurred.
0 Cannot use object of type stdClass as array
Return to Control Panel

so I'm looking for the cause.
Enabling the Error reporting, the only warnings I get are:

Notice: Only variables should be assigned by reference in /var/www/vhosts/suonidellamemoria.com/archiviosonoro/components/com_k2/sef_ext.php on line 37
Notice: Only variables should be assigned by reference in /var/www/vhosts/suonidellamemoria.com/archiviosonoro/components/com_k2/sef_ext.php on line 569

It is a php 7.1/Apache server.
Please, can you help me to understand it?
Thanks

Hello,

Are you getting this error on all menu items or just the K2 ones?
Are you using any 3rd party K2 extensions?

Thank you Krikor, it was on Filter for K2 - menu item options
disabled it, I can edit menu items.

Thank you for letting me know :)
Also alert their devs about it so they can provide a fix.

I think the same problem here but no idea how to fix. In debug mode, my error is:

0 Cannot use object of type stdClass as array
/home/emiliona/public_html/plugins/system/uniquestyle/uniquestyle.php:23

Any advice? Is this error K2 related too?
I am going crazy to find the reason.

Thanks.

Hello,

This is not related to K2, as the path suggest the unique style plugin is generating this error.