Warning: array_key_exists() expects parameter 2 to be array, null given in /wpdiscuz/forms/wpdFormAttr/Form.php - How-to and Troubleshooting https://wpdiscuz.com/community/troubleshooting/warning-array_key_exists-expects-parameter-2-to-be-array-null-given-in-wpdiscuz-forms-wpdformattr-form-php/ wpDiscuz WordPress Comment Plugin Community. Support and Resources. en-US Tue, 10 Mar 2026 13:12:20 +0000 wpForo 60 RE: Warning: array_key_exists() expects parameter 2 to be array, null given in /wpdiscuz/forms/wpdFormAttr/Form.php https://wpdiscuz.com/community/troubleshooting/warning-array_key_exists-expects-parameter-2-to-be-array-null-given-in-wpdiscuz-forms-wpdformattr-form-php/#post-14943 Wed, 15 Jun 2022 12:04:55 +0000 @rem,

Please update the wpDiscuz to the latest version (v. 7.3.19) and check again. The issue should be solved. 

]]> How-to and Troubleshooting Asti https://wpdiscuz.com/community/troubleshooting/warning-array_key_exists-expects-parameter-2-to-be-array-null-given-in-wpdiscuz-forms-wpdformattr-form-php/#post-14943 RE: Warning: array_key_exists() expects parameter 2 to be array, null given in /wpdiscuz/forms/wpdFormAttr/Form.php https://wpdiscuz.com/community/troubleshooting/warning-array_key_exists-expects-parameter-2-to-be-array-null-given-in-wpdiscuz-forms-wpdformattr-form-php/#post-14935 Wed, 15 Jun 2022 11:15:52 +0000 @rem,

This issue will be fixed very soon. Please wait for the next update.

]]> How-to and Troubleshooting Asti https://wpdiscuz.com/community/troubleshooting/warning-array_key_exists-expects-parameter-2-to-be-array-null-given-in-wpdiscuz-forms-wpdformattr-form-php/#post-14935 RE: Warning: array_key_exists() expects parameter 2 to be array, null given in /wpdiscuz/forms/wpdFormAttr/Form.php https://wpdiscuz.com/community/troubleshooting/warning-array_key_exists-expects-parameter-2-to-be-array-null-given-in-wpdiscuz-forms-wpdformattr-form-php/#post-14919 Wed, 15 Jun 2022 09:25:31 +0000 Please wait a bit. We're currently checking the issue. 

]]> How-to and Troubleshooting Asti https://wpdiscuz.com/community/troubleshooting/warning-array_key_exists-expects-parameter-2-to-be-array-null-given-in-wpdiscuz-forms-wpdformattr-form-php/#post-14919 Warning: array_key_exists() expects parameter 2 to be array, null given in /wpdiscuz/forms/wpdFormAttr/Form.php https://wpdiscuz.com/community/troubleshooting/warning-array_key_exists-expects-parameter-2-to-be-array-null-given-in-wpdiscuz-forms-wpdformattr-form-php/#post-14917 Wed, 15 Jun 2022 08:28:37 +0000 Today we have updated the plugin and website crashed.
We solved this downgrading from php8.0 to 7.4 but now we see this waring error in the header:

Warning: array_key_exists() expects parameter 2 to be array, null given in /usr/home/ourwebsite/web/wp-content/plugins/wpdiscuz/forms/wpdFormAttr/Form.php on line 173

What is the solution for this?

Thanks in advance.

]]> How-to and Troubleshooting Rem https://wpdiscuz.com/community/troubleshooting/warning-array_key_exists-expects-parameter-2-to-be-array-null-given-in-wpdiscuz-forms-wpdformattr-form-php/#post-14917