Title: PHP Warning: Undefined array key “extensions”
Last modified: October 28, 2025

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# PHP Warning: Undefined array key “extensions”

 *  [malhyp9](https://wordpress.org/support/users/malhyp9/)
 * (@malhyp9)
 * [7 months ago](https://wordpress.org/support/topic/php-warning-undefined-array-key-extensions/)
 * Hi there, we keep getting the following error, do we know why?
   [27-Oct-2025 20:
   03:20 UTC] PHP Warning: Undefined array key “extensions” in /home/demo9/public_html/
   wp-content/plugins/wp-advanced-math-captcha/includes/class-core.php on line 444

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 * 0 replies
 * 1 participant
 * Last reply from: [malhyp9](https://wordpress.org/support/users/malhyp9/)
 * Last activity: [7 months ago](https://wordpress.org/support/topic/php-warning-undefined-array-key-extensions/)
 * Status: not resolved