Looking for logging into the Http Localhost 3000 site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Http Localhost 3000 site. After that you can login as usual with your login credentials.
https://ja.stackoverflow.com/questions/21257/http-localhost3000-%E3%81%8C%E9%96%8B%E3%81%91%E3%81%BE%E3%81%9B%E3%82%93
https://teratail.com/questions/621
https://teratail.com/questions/130201
https://teratail.com/questions/40870
http://www.localhost3000.org/
https://qiita.com/yusaku_uchida/items/bc7dc4cd654247d2a0aa
https://qiita.com/takuyanin/items/03b66cd9cf8884e577c0
http://pyoonn.hatenablog.com/entry/2014/10/17/173916
https://www.quora.com/How-do-I-access-localhost-3000
https://community.grafana.com/t/insatalled-grafana-http-localhost-3000-login-not-able-to-login/8209
http://redmine.jp/faq/general/url/
http://rails.hatenadiary.jp/entry/2016/06/24/210114
https://community.auth0.com/t/http-localhost-3000-is-not-in-the-list-of-allowed-callback-urls/20744