504 Gateway Error Retrieving Designer Info/Experiment on Pavlovia

URL of experiment: pavlovia.org/mjharris/sers_microdose

Description of the problem: Unable to access the experiment page or data files.

Received two different errors:

Error when authenticating the experiment designer:
>>> undefined

If the error persists, contact Pavlovia's administrator.

Full description:

"<html>\r\n<head><title>504 Gateway Time-out</title></head>\r\n<body bgcolor=\"white\">\r\n<center><h1>504 Gateway Time-out</h1></center>\r\n<hr><center>nginx</center>\r\n</body>\r\n</html>\r\n<!-- a padding to disable MSIE and Chrome friendly error page -->\r\n<!-- a padding to disable MSIE and Chrome friendly error page -->\r\n<!-- a padding to disable MSIE and Chrome friendly error page -->\r\n<!-- a padding to disable MSIE and Chrome friendly error page -->\r\n<!-- a padding to disable MSIE and Chrome friendly error page -->\r\n<!-- a padding to disable MSIE and Chrome friendly error page -->\r\n"
Error when fetching the session of the experiment:
"\r\n504 Gateway Time-out\r\n\r\n

504 Gateway Time-out
\r\n
nginx
\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n"
If the error persists, contact Pavlovia's administrator.

Any help is appreciated, thanks.

Was getting the error for about 10 minutes. Just attempted again and it accessed the experiment page. It did take a while, but finally loaded!