[] operator not supported for strings

[MeAppBuilder]

Hello,

I am running latest Joomla and Fabrik on my site.

When I try to use a menu item as Fabrik->Form, I get the error "[] operator not supported for strings". But...this is only with a Form, which is synced with Joomla User (Form: sc_user). Other Forms do work. When I use a module to display the form "sc_user", the form will show correct. I am running PHP 7.1.6

 

[MeAppBuilder]

hold on...testing something with the language...

 

[MeAppBuilder]

I noticed, that my EN version worked, but my DE version not. I re-created the german menu item and set it to work with the Fabrik Form. The new menu item worked...not sure why the old one was fault. Solved.