This email from Joel from August 13th provides details:
Hi Ani and Jordan,
This appears to be a typo in skyserver. The correct link is https://www.sdss.org/dr15/algorithms/, not https://www.sdss.org/dr15//algorithms (which has an extra slash, which is making this a broken link). Can you fix this please?
Cheers, Joel
On Aug 13, 2019, at 9:28 AM, richardcollins richardcollins@theinternetfoundation.org wrote:
Hello,
I was at http://skyserver.sdss.org/dr15/en/home.aspx and clicked on Algorithms.
https://www.sdss.org/dr15//algorithms Not Found