Change role in maintenance mode

Login as admin to my-wordpress-site/wp-admin.
Go to Plugins -> WP Maintenance Mode -> Settings.
Add a role to Backend Roles.

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To create a new role for maintenance use https://wordpress.org/plugins/user-role-editor/. User Role editor can create copies of existing roles.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)