i3 wm bindsym exec debug

Question

Is there any way to see what is happening when bindsym exec fails. I just get certain scripts fail silently and it would be great to see some sort of output in order to debug my config.

For example, if I bindsym $mod+o exec --no-startup-id {some script} it fails if I run it via shortcut. But If I run it from the terminal it works. I need to see what is happening in the background when $mod+o is pressed in order to diagnose the problem.

Can't it be done?

Thanks in advance.