I solved the problem by finding the desired table.
But the interesting thing is that I had not manipulated the database at all. And probably this problem appeared after the upgrade.
a question
Now, from versions 4.6 onwards, in some websites, after upgrading to the new version, to enter the site or the control panel, we only have to enter the email, but in some sites, with the upgrade to the new version, you can also enter the site via email or username
For example, ipsfarsi.com should be entered only through email
For example, the site ipbmafia.ru can enter both the username and email to enter the site
https://ipbmafia.ru/login/
https://ipsfarsi.com/login