XHR reponse code: 500 XHR responseText: undefined jQuery status: error

Hello,

PBX version: 15.0.37.4
PBX Distro: 12.7.8-2306-1.sng7
Asterisk Version: 16.30.0

I have uploaded new extensions and when I try to hit Apply config, it takes upwards of over 30 minutes and eventually errors out and shows the title error.

Not sure how to proceed, any assistance is much appreciated.

can you try reloading from the console
ssh in and run fwconsole reload

I ended up doing a reboot.
After the reboot it would not connect to asterisk
I ran the fwconsole reload which then gave me an error of being unable to connect
I ran asterisk -r and it reconnected to asterisk server
After it reconnected I saw that the new extensions were connecting
So it is working for now, the Apply Config button is still there but am ignoring it for now.