Unable to connect to server

[fantaxp7]

Hello,
Our FOP instance has stopped working with the error above.
I noticed this error:
root@freepbx-16:[~]:# /usr/local/fop2/fop2_server --test
Flash Operator Panel 2 - Valid License (/usr/local/fop2/fop2.lic)
Flash Operator Panel 2 - Featureset: Voicemail Explorer & IM Chat
Flash Operator Panel 2 - Allowed Tenants: 5

EV: error in callback (ignoring): Could not write configuration data /var/www/html/fop2/fop2-variablesGENERAL.txt.
Check your file permissions
EV: error in callback (ignoring): Could not write configuration data /var/www/html/fop2/fop2-variablesGENERAL.txt.
Check your file permissions

I also saw an old post here mentioning location of fop install and I believe it is in the correct location.
^Croot@freepbx-16:[~]: ls -la /var/www/html
total 60
drwxrwxr-x. 11 asterisk asterisk 4096 May 18 2022 ./
drwxr-xr-x. 5 root root 4096 Apr 2 2020 ../
drwxrwxr-x 2 asterisk asterisk 4096 Jun 10 2017 aastra/
drwxrwxr-x. 12 asterisk asterisk 4096 Mar 1 2022 admin/
drwxrwxr-x. 2 asterisk asterisk 4096 May 9 2019 digium_phones/
-rw-rw-r-- 1 asterisk asterisk 894 Jun 10 2017 favicon.ico
drwxrwxr-x 12 asterisk asterisk 4096 Mar 31 09:17 fop2/
drwxrwxr-x 2 asterisk asterisk 4096 Jul 3 2017 .freepbx-known/
-rw-rw-r-- 1 asterisk asterisk 16 Jun 27 12:08 .htaccess
-rw-rw-r-- 1 asterisk asterisk 453 Jun 27 12:08 index.php
drwxrwxr-x 7 asterisk asterisk 4096 Mar 1 2022 recordings/
drwxrwxr-x. 2 asterisk asterisk 4096 Mar 1 2022 restapi/
drwxrwxr-x. 2 asterisk asterisk 4096 Aug 24 17:40 restapps/
-rw-rw-r-- 1 asterisk asterisk 361 Jun 27 12:08 robots.txt
drwxrwxr-x 3 asterisk asterisk 4096 Jun 10 2017 tmp/
lrwxrwxrwx 1 asterisk asterisk 38 Dec 31 2021 ucp -> /var/www/html/admin/modules/ucp/htdocs/
Thanks for any help