I’m getting 504 errors when I try to access SWISH today.
504 errors for me, too.
First time I’ve encountered this, but it led me to this forum,
so something positive^^ (I am faculty using SWISH to teach
in Japan. Thanks to all who have brought us this platform).
SWISH got stuck. It got into a deadlock. Fortunately I could figure out where. Updated SWI-Prolog and restarted.
Yes, working again here. Thanks much again.