When trying to log in into Fedora discussion, pagure or others related, I have several errors showing up. I am located in South America, Brazil.
Here are the errors and details that show up when trying to log in:

https://id.fedoraproject.org/login/pam
500 Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator at root@localhost to inform them of the time this error occurred, and the actions you performed just before this error.
More information about this error may be available in the server error log.
https://id.fedoraproject.org/login/pam

504 Gateway Timeout
The gateway did not receive a timely response from the upstream server or application.

400 Bad Request
Invalid transaction id
https://id.fedoraproject.org/saml2/SSO/Continue?ipsilon_transaction_id=83d9e5ad-51a2-4ca1-b390-6a0990e7c2eb

Describe what you would like us to do:

What is causing these kind of errors, and a possible solution to fix it.

When do you need this to be done by? (YYYY/MM/DD)

There is no due date, although it would be great if done as soon as possible, since it may affect other users around the world.