Problem during Article submission

Hello all
I have a problem during submission process of article in the role of Author.
After I click Begin submission button, the system freezes.

The version is
Please, help me to resolve the issue,

Hi @Bakhtinur_Khudanov,

For errors of this nature (where the system freezes), it is best to check your PHP error log and report on errors found there.

PKP Team

This is what I got from my Cpanel Error menu.
Is thery any error that caused freezing?

I downgraded the version to, and now it seems to be working, however now I face with a problem of Uzbek language locals. There is no Uzbek language listed there. How can I include it now?