View and edit don't work

Goodmorning everyone,
for some reason cc5 does not work as it should, the functions view, edit don't work (in practice it only makes me look at the expression {xxx.yyy} but not the value).
To do the tests I also created a VirtualMachine with linux, apache, php, mysql and I installed joomla and cf5 + cc5.
Even here everything works, but I have the same problem.
I think that I do some I do during the installation or I'm wrong to write the expression, but I follow the lines and sign the guides.
Some plugins to enable? or what else?

Hi Daniele,

Did you try to use v6 ? its in a better state than v5 now

Best regards

I will try, thanks.