[Error] Invalid CSRF token. Send the form again.

I am trying to modify an user’s username using Adminer. I go to the wp_users table, find the row I need to modify, click edit, modify user-login, and get the error: Invalid CSRF token. Send the form again.

I tried again and it does not work either.

http://ww.wp.xz.cn/extend/plugins/adminer/