Looking for logging into the Spring Security Error 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 Spring Security Error site. After that you can login as usual with your login credentials.
http://namihira.hatenablog.com/entry/20160817/1471396975
https://arakan-pgm-ai.hatenablog.com/entry/2018/03/20/060000
https://qiita.com/yokobonbon/items/6459bec1f09b57982bc1
https://teratail.com/questions/111889
https://www.baeldung.com/spring-security-login-error-handling-localization
https://www.baeldung.com/spring-security-login
https://stackoverflow.com/questions/48112975/spring-security-login-error
https://stackoverflow.com/questions/49660763/spring-security-login-always-lands-in-an-error-page-with-no-message
http://fukuchiharuki.me/wiki/index.php?Spring%20Boot/%E3%83%AD%E3%82%B0%E3%82%A4%E3%83%B3%E3%82%A8%E3%83%A9%E3%83%BC%E3%81%AE%E3%83%A1%E3%83%83%E3%82%BB%E3%83%BC%E3%82%B8%E3%82%92%E3%82%AB%E3%82%B9%E3%82%BF%E3%83%9E%E3%82%A4%E3%82%BA%E3%81%99%E3%82%8B
https://terasolunaorg.github.io/guideline/public_review/Security/Authentication.html
https://www.qoosky.io/techs/9c84302b20