The first website is running normally, bench --site erp2 to create a second website, Setup multitenancy, but the second website shows no erpnext application. Open only the Frappe framework. May I ask what is the reason?
Did you install the erpnext application to the new site?
bench --site second.local --install-app erpnext
You may need to uninstall this application and install it again.
bench drop-site second.local
bench new-site second.local --install-app erpnext