[SOLVED] - Strange problem with POST data

Oh. The namespace was mistyped.

 Don't worry Paul... 
I think that the problem still in my debian box.... 
At the moment i haven't any idea for the solution...
In ci3 i maked 2 web app for my company, there are most of 100000 row of code and i never founded a problem like this.... 
In this days, i'll rebuild the box, and i'll try another time with ci4....
Thanks to all