We created a test sub domain: https://dev.segev-design.co.il/ the debug is true.you can see the errors in the following link:https://dev.segev-design.co.il/portfolio/%d7%a2%d7%99%d7%a6%d7%95%d7%91-%d7%a4%d7%a0%d7%99%d7%9d-%d7%9c%d7%9e%d7%a9%d7%a8%d7%93%d7%99%d7%9d-%d7%91%d7%9e%d7%92%d7%93%d7%9c%d7%99-%d7%90%d7%9c%d7%95%d7%9f-%d7%aa%d7%90/
I've send a ticket to ACF and this is their answer:
It is likely that your theme template(portfolio-gallery.php) is using deprecated ACF functions that are not compatible with the latest ACF version "Warning: Illegal string offset 'acf_fc_layout' in /home/segevdesignco/sites/dev.segev-design.co.il/wp-content/themes/kalium/tpls/portfolio-gallery.php on line 67"Can you confirm that you are using the latest version of the theme? If not, please get in touch with your theme author so that they can advise further.
can you please help?
I wasn't aware of this issue that is happening with latest version of ACF so I would like to login to your site and test the issue because in our demos its not happening something like this.
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I saw that you were using ACF free version which supported however insufficient for all features that Kalium uses, so ACF PRO will solve this and I have installed:
(view large image)
The page doesn't show errors anymore: