Weird...I applied this fix, restarted apache successfully, but now Jackett won't load at all. I keep getting "503 Service Unavailable" on "https://domain.com/jackett/Admin/Dashboard".
I had to change the ProxyPass back to 'localhost' instead of 'IP/domain' for it to work again.
Edit: Nevermind, forgot to enable external access. Now it works fine.
Is there a way for me to custom select a torrent from within Jackett and send directly to Sonarr? The download buttom just downloads the file to my PC.