Php Errors Showing In Logs

I am seeing some PHP errors in the log file with the current versions of sytist. They tend to occur on various site files. This is on PHP 8.1 which is what version my isp is using. They appear to be benign even though they are php fatal errors.

PHP Uncaught TypeError: mktime() 

and 

Uncaught TypeError: mysqli_fetch_array()

Examples:

[02-Oct-2024 11:20:01 America/Chicago] PHP Fatal error:  Uncaught TypeError: mysqli_fetch_array(): Argument #1 ($result) must be of type mysqli_result, null given in /home/degruyph/public_html/sy-inc/sy-thumbnails-justified.php:341
Stack trace:

[02-Oct-2024 11:20:04 America/Chicago] PHP Fatal error:  Uncaught TypeError: mktime(): Argument #6 ($year) must be of type ?int, string given in /home/degruyph/public_html/sy-inc/photos_functions.php:187
Stack trace:

I've made a note to look into it.