Một số lỗi khi chạy trên php8.2

<h4>A PHP Error was encountered</h4>

Severity: 8192
Message: strtolower(): Passing null to parameter #1 ($string) of type string is deprecated
Filename: core/Input.php
Line Number: 911

Severity: 8192
Message: strtoupper(): Passing null to parameter #1 ($string) of type string is deprecated
Filename: core/Security.php
Line Number: 224