REST buttons "Loading Please Wait" after upgrade to Freepbx17

We created a new install of freepbx 17 and restored from freepbx 15 backup. Everything seems to be working now, except for the REST buttons on the Sangoma S705 phones. Whenever you press them, it just says Loading, Please wait, and nothing happens, then it goes away and you’re back to regular screen. The old pbx was chan sip extensions and are now converted to pjsip. I don’t know if that is relevant or not. Also the old setup, phone apps were http, they are now https, but port 1443 is forwarded to the pbx.

What do I need to watch for in the log lines?

The pbx is up to date.

Hi @ozarktech
Please run fwconsole debug and then press button to see if you get anything in the log?
Or may be check logs at apache level in /var/log/apach2 to first ensure phone request is actually hitting to freepbx (to rule out firewall/networking issue) and then if there is any error in sending response back.

Regards,
Kapil