Title: php Warnings in Debug Mode
Last modified: November 13, 2020

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# php Warnings in Debug Mode

 *  [brudi](https://wordpress.org/support/users/brudi/)
 * (@brudi)
 * [5 years, 7 months ago](https://wordpress.org/support/topic/php-warnings-in-debug-mode-2/)
 * When Debug is turned on i get these warnigs in the backend. Any Idea what to 
   do about that?
 * Notice: Trying to access array offset on value of type bool in /www/htdocs/w01818ab/
   battle.vanbruda.de/wp-content/plugins/advanced-custom-fields-pro/includes/acf-
   field-group-functions.php on line 58
 * Notice: Trying to access array offset on value of type bool in /www/htdocs/w01818ab/
   battle.vanbruda.de/wp-content/plugins/advanced-custom-fields-pro/includes/acf-
   field-group-functions.php on line 59
 * Notice: Trying to access array offset on value of type bool in /www/htdocs/w01818ab/
   battle.vanbruda.de/wp-content/plugins/advanced-custom-fields-pro/includes/acf-
   field-group-functions.php on line 59
 * Notice: Trying to access array offset on value of type bool in /www/htdocs/w01818ab/
   battle.vanbruda.de/wp-content/plugins/advanced-custom-fields-pro/includes/acf-
   field-group-functions.php on line 439
 * Warning: Cannot modify header information – headers already sent by (output started
   at /www/htdocs/w01818ab/battle.vanbruda.de/wp-content/plugins/advanced-custom-
   fields-pro/includes/acf-field-group-functions.php:58) in /www/htdocs/w01818ab/
   battle.vanbruda.de/wp-admin/admin-header.php on line 9

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 * 0 replies
 * 1 participant
 * Last reply from: [brudi](https://wordpress.org/support/users/brudi/)
 * Last activity: [5 years, 7 months ago](https://wordpress.org/support/topic/php-warnings-in-debug-mode-2/)
 * Status: not resolved