Looking for logging into the _session 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 _session site. After that you can login as usual with your login credentials.
https://www.formget.com/login-form-in-php/
https://www.johnmorrisonline.com/build-php-login-form-using-sessions/
https://stackoverflow.com/questions/42590634/undefined-variable-session-php-login-script
http://php.net/manual/fr/reserved.variables.session.php
http://php.net/manual/en/function.session-start.php
https://en.wikipedia.org/wiki/Login_session
https://winscp.net/eng/docs/ui_login?ver=5.5.3&lang=0409
https://dev.infobip.com/settings/sessions
https://docs.alfresco.com/process-services1.7/topics/login_session.html
https://docs.alfresco.com/process-services1.9/concepts/login_session.html
https://mikogo.zendesk.com/hc/en-us/articles/200453183-Integrate-a-Mikogo-Session-Login-into-your-website-
https://summer.stanford.edu/user/login
https://processwire.com/api/ref/session/login/