Follow the Setup guide
Because of the changes with the multi-config setup, you'll need to flush your database and refill it.
Use either a migration or force a schema update to update the database
bin/console doctrine:migrations:diff && bin/console doctrine:migrations:migrate
bin/console doctrine:schema:update --force
Flush the data and reload it
bin/console kuma:dashboard:widget:googleanalytics:data:flush
bin/console kuma:dashboard:collect