====== NextCloud 27 Your Installation Has No default phone region Set ======
Find your NextCloud "config.php" file.
cd /var/www/[. . . path . . . ]/nextcloud/config/
List files in the config directory:
ls
config.php
Use Vim or Nano to edit the config.php file.
sudo vim config.php
Before the line containing:
'maintenance' => 'false',
Insert the following line:
'default_phone_region' => 'US',
Near the end of the config.php file should look like this:
'default_phone_region' => 'US',
'maintenance' => false,
);
Save the vim or nano edits/changes to the config.php file and restart apache2
sudo systemctl restart apache2