Error when creating new user in phpmyadmin

Hi,

I'm trying to move our company's site to Linode, but preparing the migration, I encountered the following problem:

I have nginx and php-fpm installed and configured along with phpmyadmin.

When attempting to create a user with phpmyadmin, I get these errors:

#1065 - Query was empty

The selected user was not found in the privilege table.

This has been blocking me from migrating for a week now both on my personal site, and my company's one, so I would really appreciate some help.

My phpmyadmin version is 4.5.0.2

Thanks in advance!

I'm Hungarian, so please excuse me for grammatical mistakes