Looking for logging into the Drupal Error Endless Redirect 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 Drupal Error Endless Redirect site. After that you can login as usual with your login credentials.
https://www.drupal.org/forum/support/post-installation/2010-04-09/solved-infinite-redirect-loop-on-login
https://www.drupal.org/project/require_login/issues/2881063
https://www.drupal.org/project/redirect/issues/2895845
https://drupal.stackexchange.com/questions/212901/infinite-loop-redirect-issue-too-many-redirects
https://drupal.stackexchange.com/questions/176614/infinite-redirects-with-drupal-goto/176627
https://github.com/kalabox/kalabox/issues/335
https://stackoverflow.com/questions/47597439/how-to-properly-implement-a-php-redirect-in-drupal-7-x
http://data.agaric.com/infinite-redirect-loop-trying-go-anything-but-front-page
https://www.hostinger.com/tutorials/fix-wordpress-login-redirect-loop
https://www.freelock.com/blog/john-locke/2017-04/nginx-fix-redirect-loop-d8-sites
https://support.cloudflare.com/hc/en-us/articles/115000219871-Why-do-I-see-redirect-loop-errors-
https://support.acquia.com/hc/en-us/articles/360004304254-Finding-the-source-of-an-unwanted-301-or-302-redirect
https://www.siteground.com/kb/website-goes-redirect-loop-enabling-cloudflare/