[8.1] Deprecated on page.banlist

[Rushaway]

What are the steps to reproduce this issue?

1. Go on Settings
2. No Country Research
3. Tick it (Enable)
4. Error

What happens?

We found a deprecated error :confused:

What were you expecting to happen?

Never see this error again.

Any logs, error output, etc.?

Warning: Trying to access array offset on value of type null in /includes/system-functions.php on line 171
Deprecated: strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /pages/page.banlist.php on line 473

Any other comments?

What versions of software are you using?

Operating System: nginx SourceBans++ Version: 1.7.0 (php 8.1 branch) with the lastest release. PHP Version: 8.1.10 MySQL Version: 10.6.7-MariaDB-2ubuntu1 - Ubuntu 22.04 Link to your project: https://upgradebans.nide.gg/index.php Link to a phpinfo() output: https://upgradebans.nide.gg/phpinfo.php