Title: Warning: Undefined array key
Last modified: June 25, 2025

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# Warning: Undefined array key

 *  [zebullon](https://wordpress.org/support/users/zebullon/)
 * (@zebullon)
 * [9 months, 3 weeks ago](https://wordpress.org/support/topic/warning-undefined-array-key-34/)
 * Hello,
 * WP Cerber generates two “Warning: Undefined array key” errors with PHP 8.1 :
    - Warning: Undefined array key 1 in /wp-content/plugins/wp-cerber/cerber-common.
      php on line 4745
    - Warning: Undefined array key “HTTP_HOST” in /wp-content/plugins/wp-cerber/
      cerber-load.php on line 7938
    - Warning: Undefined array key “REQUEST_METHOD” in /wp-content/plugins/wp-cerber/
      cerber-load.php on line 7939
 * Thank you for your help.

The topic ‘Warning: Undefined array key’ is closed to new replies.

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 * 0 replies
 * 1 participant
 * Last reply from: [zebullon](https://wordpress.org/support/users/zebullon/)
 * Last activity: [9 months, 3 weeks ago](https://wordpress.org/support/topic/warning-undefined-array-key-34/)
 * Status: not resolved