Title: Basic Form Cause critical Error Last modified: July 10, 2024 --- # Basic Form Cause critical Error * Resolved [iperez_genius](https://wordpress.org/support/users/iperez_genius/) * (@iperez_genius) * [1 year, 11 months ago](https://wordpress.org/support/topic/basic-form-cause-critical-error/) * When I submit my basic contact form I receive a “critical error has occurred on your site”. * In the developer window I can see that its returning a 500 Error. * Any idea what the cause might be, Viewing 7 replies - 1 through 7 (of 7 total) * Plugin Support [Ralden Souza](https://wordpress.org/support/users/rsouzaam/) * (@rsouzaam) * [1 year, 11 months ago](https://wordpress.org/support/topic/basic-form-cause-critical-error/#post-17884303) * Hi [@iperez_genius](https://wordpress.org/support/users/iperez_genius/), * Thanks for reaching out! And I’m sorry to hear about the error. * When you get a chance, could you please share the URL to access your form? This way, I can investigate the issue. * In case it helps, I recommend checking if you’re using [the latest version of WPForms](https://wordpress.org/plugins/wpforms-lite/#developers). Besides adding new features and enhancements, plugin updates also fix known issues. * And WPBeginner has a [guide on how to fix the critical error in WordPress here](https://www.wpbeginner.com/wp-tutorials/how-to-fix-the-critical-error-in-wordpress/). * Thanks! * Thread Starter [iperez_genius](https://wordpress.org/support/users/iperez_genius/) * (@iperez_genius) * [1 year, 11 months ago](https://wordpress.org/support/topic/basic-form-cause-critical-error/#post-17884328) * if you submit the this contact form you will see the issue * [https://learn.pyramidanalytics.com/contact](https://learn.pyramidanalytics.com/contact) * Plugin Support [Ralden Souza](https://wordpress.org/support/users/rsouzaam/) * (@rsouzaam) * [1 year, 11 months ago](https://wordpress.org/support/topic/basic-form-cause-critical-error/#post-17886272) * Hi [@iperez_genius](https://wordpress.org/support/users/iperez_genius/), * Thanks for the information! * I could reproduce the issue after submitting your form. * When you get a chance, could you please enable debugging in WordPress and share the errors reported there? In case it helps, we have a [guide here](https://wpforms.com/developers/how-to-enable-debugging-in-wordpress/) with details on how to do this. * Also, please share the details from **WPForms > Tools > System Info** ([screenshot](https://a.supportally.com/i/pYiTDC)). * I recommend adding all this information to a link, which you can delete later( after we get it), since all the information on this topic is public. For example, you could add the details to a Google Docs, share the link here, and delete after we have saved the details. * With those details, we will be able to investigate the issue. * Thanks! * Thread Starter [iperez_genius](https://wordpress.org/support/users/iperez_genius/) * (@iperez_genius) * [1 year, 11 months ago](https://wordpress.org/support/topic/basic-form-cause-critical-error/#post-17888426) * ![](https://wordpress.org/5ecfa508-7158-4c62-8e02-8f21967e0515) * **Fatal error**: Uncaught Error: Class ‘DOMDocument’ not found in /var/www/html/ wp-content/plugins/wpforms-lite/vendor_prefixed/tijsverkoyen/css-to-inline-styles/ src/CssToInlineStyles.php:92 Stack trace: #0 /var/www/html/wp-content/plugins/ wpforms-lite/vendor_prefixed/tijsverkoyen/css-to-inline-styles/src/CssToInlineStyles. php(33): WPForms\Vendor\TijsVerkoyen\CssToInlineStyles\CssToInlineStyles->createDomDocumentFromHtml()# 1 /var/www/html/wp-content/plugins/wpforms-lite/src/Emails/Styler.php(113): WPForms\ Vendor\TijsVerkoyen\CssToInlineStyles\CssToInlineStyles->convert() #2 /var/www/ html/wp-content/plugins/wpforms-lite/src/Emails/Styler.php(131): WPForms\Emails\ Styler->process_markup() #3 /var/www/html/wp-content/plugins/wpforms-lite/src/ Emails/Templates/General.php(417): WPForms\Emails\Styler->get() #4 /var/www/html/ wp-content/plugins/wpforms-lite/src/Emails/Templates/General.php(447): WPForms\ Emails\Templates\General->save_styled() #5 /var/www/html/wp-content/plugins/wpforms- lite/src/Emails/Templates/General.php(461): WPFo in **/var/www/html/wp-content/ plugins/wpforms-lite/vendor_prefixed/tijsverkoyen/css-to-inline-styles/src/CssToInlineStyles. php** on line **92** * Thread Starter [iperez_genius](https://wordpress.org/support/users/iperez_genius/) * (@iperez_genius) * [1 year, 11 months ago](https://wordpress.org/support/topic/basic-form-cause-critical-error/#post-17888587) * I can confirm that DOM is installed and running in php. * Plugin Support [Ralden Souza](https://wordpress.org/support/users/rsouzaam/) * (@rsouzaam) * [1 year, 10 months ago](https://wordpress.org/support/topic/basic-form-cause-critical-error/#post-17893169) * Hi [@iperez_genius](https://wordpress.org/support/users/iperez_genius/), * Thank you for sharing those details! * The issue might be due to the fact that the `/wp-content/plugins/wpforms/vendor_prefixed/` directory is empty, and it should contain some third-party libraries, such as`/ tijsverkoyen/`. * When you get a chance, could you please re-upload the entire WPForms Lite plugin? This should resolve the issue. * Thanks! * Plugin Support [Ralden Souza](https://wordpress.org/support/users/rsouzaam/) * (@rsouzaam) * [1 year, 10 months ago](https://wordpress.org/support/topic/basic-form-cause-critical-error/#post-17898994) * Hi [@iperez_genius](https://wordpress.org/support/users/iperez_genius/), * We haven’t heard back from you in a few days, so I’m going to go ahead and close this thread for now. But if you’d like us to assist further, please feel welcome to continue the conversation. * Thanks! Viewing 7 replies - 1 through 7 (of 7 total) The topic ‘Basic Form Cause critical Error’ is closed to new replies. * ![](https://ps.w.org/wpforms-lite/assets/icon.svg?rev=3254748) * [WPForms - Easy Form Builder for WordPress - Contact Forms, Payment Forms, Surveys, & More](https://wordpress.org/plugins/wpforms-lite/) * [Frequently Asked Questions](https://wordpress.org/plugins/wpforms-lite/#faq) * [Support Threads](https://wordpress.org/support/plugin/wpforms-lite/) * [Active Topics](https://wordpress.org/support/plugin/wpforms-lite/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/wpforms-lite/unresolved/) * [Reviews](https://wordpress.org/support/plugin/wpforms-lite/reviews/) * 7 replies * 2 participants * Last reply from: [Ralden Souza](https://wordpress.org/support/users/rsouzaam/) * Last activity: [1 year, 10 months ago](https://wordpress.org/support/topic/basic-form-cause-critical-error/#post-17898994) * Status: resolved