When I was exploring the different categories on the forums, I noticed that the reference manual link that was provided in the tutorials category (pinned post) appears to be correct: https://snap.berkeley.edu/snapsource/help/SnapManual.pdf but links to an empty Snap! project. I don't know if this link is used in other areas of the forum, but it is possible that if multiple places use this same link, they may lead to the wrong place.
I guess that's because the snapsource address is no longer present in Snap!, so instead it will redirect to Redirecting to Snap! instead of going to that snapsource link.
Fixed! Thanks.