Permission error after disabling multisite

Hello!

I’ve had to disable multisite feature on one of my websites. I’ve done it by setting WP_ALLOW_MULTISITE, MULTISITE, SUBDOMAIN_INSTALL to false in wp-config.php. After that when I try to log in I get this error:

you do not have sufficient permissions to access this page

I’ve tried to rename plugins folder or to change wp_capability in database and few other solutions, but nothing has helped me.

Thank you in advance for your time.