Title: Undefined array key Error Last modified: May 21, 2021 --- # Undefined array key Error * Resolved [brokenbrainguy](https://wordpress.org/support/users/brokenbrainguy/) * (@brokenbrainguy) * [5 years ago](https://wordpress.org/support/topic/undefined-array-key-error/) * I’m developing a website theme using Redux on my local dev machine and I’m getting this error as soon as I open the website frontend at the top of the page. I’m using XAMPP to develop using PHP. Any recommendations how to fix would be appreciated. * `Warning: Undefined array key “real_path” in D:\XAMPP\htdocs\wordpress\wp-content\ plugins\redux-framework\redux-core\inc\classes\class-redux-field.php on line 175 * Warning: Undefined array key “url” in D:\XAMPP\htdocs\wordpress\wp-content\plugins\ redux-framework\redux-core\inc\classes\class-redux-field.php on line 176 * Warning: Undefined array key “real_path” in D:\XAMPP\htdocs\wordpress\wp-content\ plugins\redux-framework\redux-core\inc\classes\class-redux-field.php on line 175 * Warning: Undefined array key “url” in D:\XAMPP\htdocs\wordpress\wp-content\plugins\ redux-framework\redux-core\inc\classes\class-redux-field.php on line 176 * Warning: Undefined array key “real_path” in D:\XAMPP\htdocs\wordpress\wp-content\ plugins\redux-framework\redux-core\inc\classes\class-redux-field.php on line 175 * Warning: Undefined array key “url” in D:\XAMPP\htdocs\wordpress\wp-content\plugins\ redux-framework\redux-core\inc\classes\class-redux-field.php on line 176 * Warning: Undefined array key “real_path” in D:\XAMPP\htdocs\wordpress\wp-content\ plugins\redux-framework\redux-core\inc\classes\class-redux-field.php on line 175 * Warning: Undefined array key “url” in D:\XAMPP\htdocs\wordpress\wp-content\plugins\ redux-framework\redux-core\inc\classes\class-redux-field.php on line 176 * Warning: Undefined array key “real_path” in D:\XAMPP\htdocs\wordpress\wp-content\ plugins\redux-framework\redux-core\inc\classes\class-redux-field.php on line 175 * Warning: Undefined array key “url” in D:\XAMPP\htdocs\wordpress\wp-content\plugins\ redux-framework\redux-core\inc\classes\class-redux-field.php on line 176 * Warning: Undefined array key “real_path” in D:\XAMPP\htdocs\wordpress\wp-content\ plugins\redux-framework\redux-core\inc\classes\class-redux-field.php on line 175 * Warning: Undefined array key “url” in D:\XAMPP\htdocs\wordpress\wp-content\plugins\ redux-framework\redux-core\inc\classes\class-redux-field.php on line 176 * Warning: Undefined array key “real_path” in D:\XAMPP\htdocs\wordpress\wp-content\ plugins\redux-framework\redux-core\inc\classes\class-redux-field.php on line 175 * Warning: Undefined array key “url” in D:\XAMPP\htdocs\wordpress\wp-content\plugins\ redux-framework\redux-core\inc\classes\class-redux-field.php on line 176 * Warning: Undefined array key “real_path” in D:\XAMPP\htdocs\wordpress\wp-content\ plugins\redux-framework\redux-core\inc\classes\class-redux-field.php on line 175 * Warning: Undefined array key “url” in D:\XAMPP\htdocs\wordpress\wp-content\plugins\ redux-framework\redux-core\inc\classes\class-redux-field.php on line 176 Viewing 4 replies - 1 through 4 (of 4 total) * [Arreane](https://wordpress.org/support/users/yanex/) * (@yanex) * [5 years ago](https://wordpress.org/support/topic/undefined-array-key-error/#post-14476465) * Hi, * Please make sure that you have the latest version of Redux installed on your website and that your server meets the minimum requirements to run WordPress – [https://wordpress.org/about/requirements/](https://wordpress.org/about/requirements/) * Also, this issue might be caused by another plugin/theme. You can try to troubleshoot your problem by temporarily disabling all the plugins except for redux and switch your theme to Twenty-Twenty One and see if the error still persists. * Let us know if that works for you. * Kind Regards, Arreane * Thread Starter [brokenbrainguy](https://wordpress.org/support/users/brokenbrainguy/) * (@brokenbrainguy) * [5 years ago](https://wordpress.org/support/topic/undefined-array-key-error/#post-14477264) * It’s a sandboxed dev machine with a the latest WP, Redux from the WP Repository, and nothing no other plugins. This is a clean install with just these two running and I’m getting those errors. - This reply was modified 5 years ago by [brokenbrainguy](https://wordpress.org/support/users/brokenbrainguy/). * Thread Starter [brokenbrainguy](https://wordpress.org/support/users/brokenbrainguy/) * (@brokenbrainguy) * [5 years ago](https://wordpress.org/support/topic/undefined-array-key-error/#post-14481121) * Found the issue for anyone else with this popping up. There was a call to a custom Redux Extension that was not found. Make sure that in the options file or elsewhere in the theme, nothing custom is being called that’s causing a 404 error. * [Arreane](https://wordpress.org/support/users/yanex/) * (@yanex) * [5 years ago](https://wordpress.org/support/topic/undefined-array-key-error/#post-14481259) * Hi, * Glad you were able to figure it out. * Let us know if you need anything else. * Kind Regards, Arreane Viewing 4 replies - 1 through 4 (of 4 total) The topic ‘Undefined array key Error’ is closed to new replies. * ![](https://ps.w.org/redux-framework/assets/icon.svg?rev=2889347) * [Redux Framework](https://wordpress.org/plugins/redux-framework/) * [Frequently Asked Questions](https://wordpress.org/plugins/redux-framework/#faq) * [Support Threads](https://wordpress.org/support/plugin/redux-framework/) * [Active Topics](https://wordpress.org/support/plugin/redux-framework/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/redux-framework/unresolved/) * [Reviews](https://wordpress.org/support/plugin/redux-framework/reviews/) * 4 replies * 2 participants * Last reply from: [Arreane](https://wordpress.org/support/users/yanex/) * Last activity: [5 years ago](https://wordpress.org/support/topic/undefined-array-key-error/#post-14481259) * Status: resolved