Polylang doesn’t work after WordPress update

Version Polylang: 2.1.3

Hello,
I upgraded WordPress to 4.7.4 version and from then on Polylang doesn’t work anymore.
When Polylang is activated I can’t get into the website, it doesn’t load.

I already tried to disactivated all the plugins but the issue remains.

If I want to use the website I have to disable Polylang.

Is there someone with the same problem?
What can I do?

Thanks