Cannot load phalcon on Ubuntu 16.04 with Vagrant and Virtual box

Hi, im trying to get up a virtualized system with vagrant and virtual box and right now i'm trying to install phalcon for php 7.0. but when load the phalcon application I get the error Class 'FactoryDefault' not found

I don't know where is the problem because the extension is loaded for apache2, cli and pfm with priority 50 (see attached)

1 https://ibb.co/RgX6tgq 2 https://ibb.co/VvdvfPx 3 https://ibb.co/2q3Tywq

Then the so file exists on /usr/lib/php and when die the phpinfo() I can see that the framework is loaded. Please see attached and help me.

4 https://ibb.co/D87rdTn 5 https://ibb.co/Pg9P3h0 6 https://ibb.co/HtyXP7M

Are you sure you use full namespace of FactoryDefault class?

Oh sorry my late. It was the namespace. Many thanks!