Plugin Compatibility Issue with PHP 8.3

I wanted to report that the plugin is not fully compatible with PHP 8.3. Upon running it in a PHP 8.3 environment, the following warning is generated:

Deprecated: strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /var/www/csi/html/wp-includes/functions.php on line 7329

Deprecated: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /var/www/csi/html/wp-includes/functions.php on line 2189

Deprecated: rtrim(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/csi/html/wp-includes/formatting.php on line 2819



admin.php:

   313          // LiteSpeed has a generic problem with terminating cron jobs

   314:         if (isset($_SERVER['SERVER_SOFTWARE']) && strpos($_SERVER['SERVER_SOFTWARE'], 'LiteSpeed') !== false) {

   315              if (!is_file(ABSPATH.'.htaccess') || !preg_match('/noabort/i', file_get_contents(ABSPATH.'.htaccess'))) {

  1518  

  1519:             if (false !== strpos($file_path, '..')) {

  1520                  error_log("UpdraftPlus_Admin::do_updraft_download_backup : invalid file_path: $file_path");

  1528  

  1529:             if (!empty($file_path) && strpos(realpath($fullpath), realpath($updraftplus->backups_dir_location())) === false) {

  1530                  error_log("UpdraftPlus_Admin::do_updraft_download_backup : invalid fullpath: $fullpath");

This issue seems to be related to deprecated functionality or compatibility issues. It would be great if the plugin developers could investigate and update the codebase to ensure compatibility with PHP 8.3.