php depricated warnings

hi

i am currently developing a wordpress/woocommerce theme for a client, so i have debug on. when activating this plugin, i get following deprecated notices / warnings in php (8.1):

[06-Feb-2024 12:25:35 UTC] PHP Deprecated: strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /var/www/html/web/wp/wp-includes/functions.php on line 7241

[06-Feb-2024 12:25:35 UTC] PHP Deprecated: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /var/www/html/web/wp/wp-includes/functions.php on line 2187

[06-Feb-2024 12:26:38 UTC] PHP Warning: session_start(): Session cannot be started after headers have already been sent in /var/www/html/web/app/plugins/ups-eu-woocommerce/src/libsystems/api_ups/ups-eu-woo-call-api-ups-configurations.php on line 21

• This topic was modified 9 months, 3 weeks ago by jnz31.