Repair PHP errors

My website is down since upgrading from PHP 7.2 to 8.2. I'm looking for someone who can quickly fix the issue. OS: CentOS8

Errors:
Warning: Uninitialized string offset 0 in CpathSpec.php on line 31
Warning: Trying to access array offset on value of type null in Sweb3.php on line 2241
Warning: Undefined array key "callbackPostConfig" in Sweb3.php on line 2263
Warning: Uninitialized string offset 0 in CpathSpec.php on line 31
Warning: Resource ID#2 used as offset, casting to integer (2) in Soutput.php on line 91
500 Internal server error