Running an opencv based python script on a remote server with ssh forwarding from my macbook gives me an error

Question

I am trying to run a python script on a remote server, which includes displaying images. The image does not get displayed and I get an error Gtk-WARNING **: cannot open display:

I have checked posts where they suggest editing the flags in sshd_config and also setting the DISPLAY variable manually. But, none of that seems to be working for me.

X11Forwarding yes
X11DisplayOffset 10
X11UseLocalhost no
XAuthLocation /usr/X11/bin/xauth

Running xclock or xeyes also gives me errors.

Edit: I used ssh -X and ssh -Y to ssh into the server, neither worked

Answer 1

Solution: Restart after installing XQuartz

After looking through multiple posts and trying to make it work, I realised that after installing XQuartz, the user is required to restart the machine. It allows to set the correct environment variables (like DISPLAY). It works for me now after having restarted.

Alternative

However, in case you face a similar problem, not stemming due to the restart issue, I found an alternate way as suggested in the following link:

https://uisapp2.iu.edu/confluence-prd/pages/viewpage.action?pageId=280461906