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ERR_CONNECTION_TIMED_OUT connection to server not possible

#1 by TR537

I am running a RHEL server on a virtual machine at our university. We must use our own server for data protection rules that are non-negotiable.

I have set up the otree server, and everything seems to run fine (incl. PSQL, admin password etc. on the server_check site). I have used nginx, with an SSL certificate. The website is called ses-otree-5.unifr.ch.

The issue is that when participants try to access the study using the room-wide link (ses-otree-5.unifr.ch/room/prolific1), they see ERR_CONNECTION_TIMED_OUT (in chrome) or Safari Can't Open the Page (in Safari). I can replicate this behaviour on my private laptop. 

What is very irritating is that if I go first to ses-otree-5.unifr.ch (which redirects to the login), I am able to connect to the room wide URL ses-otree-5.unifr.ch/room/prolific1 without any issue.    

I have spent more hours than I would like to admit on trying to find the issue but I could not find it. If anyone has an idea, please let me know.


#2 by TR537

I found out that the issue was with the URL that oTree provides in the admin panel. Although we have an SSL certificate, the link there is always HTTP


But it should be HTTPS:


So, I fixed it by manually adjusting the link. But how does one get links in the admin panel that use HTTPS?

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