Admin Url Redirecting To Localhost/admin
Answer : First change from http://localhost/sitename to http://127.0.0.1/sitename/ second, after doing this remove var/cache folder. Check your Baseurl and Baseurl secure Change From :- localhost To :- 127.0.0.1 Then Run This Command :- sudo php bin/magento cache:flush sudo php bin/magento cache:clean