Looking for logging into the Spa User 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 Spa User site. After that you can login as usual with your login credentials.
https://qiita.com/uryyyyyyy/items/56f9a80a829161ae1f8e
https://qiita.com/nabeliwo/items/ac4b77324a9989e8e6bb
https://stackoverflow.com/questions/20963273/spa-best-practices-for-authentication-and-session-management
https://www.webprofessional.jp/spa-social-login-google-facebook/
https://community.auth0.com/t/how-to-maintain-the-user-authenticated-in-a-spa-with-custom-login/6631
https://manual.wingarc-support.com/manual/svf/spa93apiref/p54102867/p55978659
https://techblog.kayac.com/10-spa-knowhow
https://www.sitepoint.com/spa-social-login-google-facebook/
https://codeburst.io/api-authentication-in-laravel-vue-spa-using-jwt-auth-d8251b3632e0
https://dev.classmethod.jp/cloud/aws/cognito-admin-create-user-2/
https://blog.bati11.info/entry/2018/06/25/001711
https://tech.quartetcom.co.jp/2018/12/19/symfony4-firebase-authentication/
https://www.slideshare.net/masayuki-kato/serverless-awsspa