Not php 8.3 compatible?

[BackuPs]

When i import the wordpress demo data i get these numerous warnings on the same line.

Warning: Undefined array key 1 in /var/docs/public/wp-content/plugins/wordpress-importer/parsers/class-wxr-parser-regex.php on line 65

Deprecated: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in /var/docs/public/wp-content/plugins/wordpress-importer/parsers/class-wxr-parser-regex.php on line 118

Please resolve

I have debug mode enabled. A clean wordpress install with a default wp theme.

I am importing https://github.com/WordPress/theme-test-data file themeunittestdata.wordpress.xml