Title: Array offset on null value + Undefined windowsstore array key
Last modified: May 10, 2026

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# Array offset on null value + Undefined windowsstore array key

 *  [Gioxx](https://wordpress.org/support/users/gioxx/)
 * (@gioxx)
 * [3 days, 5 hours ago](https://wordpress.org/support/topic/array-offset-on-null-value-undefined-windowsstore-array-key/)
 * Ciao! I would like to report a few bugs that seem to be recurring (I noticed 
   them while checking the server logs).
    - The plugin attempts to access array offsets on a null value, indicating missing
      or failed API responses or uninitialized data in `wp-content/plugins/wp-appbox/
      inc/getappinfo.class.php`. Check `getappinfo.class.php:871` for proper error
      handling.
    - `createattributs.class.php` accesses ‘`windowsstore`‘ key without verification,
      likely due to missing or incomplete app metadata. This could likely be resolved
      by adding an isset() check or a default value for the `windowsstore` key in`
      createattributs.class.php:69`.
    - predefined `$http_response_header` fails with PHP 8.1+
 * Thanks!

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 * Last reply from: [Gioxx](https://wordpress.org/support/users/gioxx/)
 * Last activity: [3 days, 5 hours ago](https://wordpress.org/support/topic/array-offset-on-null-value-undefined-windowsstore-array-key/)
 * Status: not a support question