Are you stuck here? Signing by correct username and password, but it returns error because Current Session Has Been Expired. It maybe because there is no path that has
admin/security/session_lifetime value on
core_config_data table of your database.
You can add it into that table by adding 1 row of that has the value :
config_id : NULL (automatically)
scope : default
scope_id : 0
path : admin/security/session_lifetime
value : 86400 (1 day by 60*60*24, it's in second)
Next, you need to clean cache :
php bin/magento cache:clean or
bin/magento cache:clean. Then hard refresh the browser, and sign in.