Title: Fatal error in Css_Customizer.php Last modified: December 29, 2020 --- # Fatal error in Css_Customizer.php * Resolved [Mark Drovdahl](https://wordpress.org/support/users/mdrovdahl/) * (@mdrovdahl) * [5 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-in-css_customizer-php/) * Greetings. Since the 2.0 release we’re getting fatal errors in the Tooltip Preview iframe that appear to be related to passing an empty Array into the second parameter of the `generate_css_selector()` function. See below… * When seeking help with this issue, you may be asked for some of the following information: WordPress version 5.6 Current theme: (version ) Current plugin: Glossary (Premium) (version 2.0) PHP version 7.3.25 * Error Details ============= An error of type E_ERROR was caused in line 235 of the file /srv/htdocs/wp-content/plugins/glossary-by-codeat-premium/frontend/ Css_Customizer.php. Error message: Uncaught TypeError: Argument 2 passed to Glossary\ Frontend\Css_Customizer::generate_css_proprierty() must be of the type string, null given, called in /srv/htdocs/wp-content/plugins/glossary-by-codeat-premium/ frontend/Css_Customizer.php on line 216 and defined in /srv/htdocs/wp-content/ plugins/glossary-by-codeat-premium/frontend/Css_Customizer.php:235 Stack trace:# 0 /srv/htdocs/wp-content/plugins/glossary-by-codeat-premium/frontend/Css_Customizer. php(216): Glossary\Frontend\Css_Customizer->generate_css_proprierty(‘color’, NULL) #1 /srv/htdocs/wp-content/plugins/glossary-by-codeat-premium/frontend/Css_Customizer. php(87): Glossary\Frontend\Css_Customizer->generate_css_selector(‘.glossary-toolt…’, Array) #2 /srv/htdocs/wp-content/plugins/glossary-by-codeat-premium/backend/views/ preview.php(93): Glossary\Frontend\Css_Customizer->print_css() #3 /srv/htdocs/ wp-content/plugins/glossary-by-codeat-premium/backend/Settings_Page.php(86): include_once(‘/srv/htdocs/wp-…’) #4 /wordpress/core/5.6/wp-includes/class-wp- hook.php(287): Glossary\Backend\Settings_Page->preview__premium_only(”) #5 /wordpress/ core/5.6/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array)# 6 /wordpress/core/5.6/wp-includes/plugin.php(484): WP_Hook->do_action(Array) # 7 /wordpress/core/5.6/wp-settings.php(557): do_action(‘init’) #8 /srv/htdocs/ wp-config.php(92): require_once(‘/wordpress/core…’) #9 /wordpress/core/5.6/wp- load.php(42): require_once(‘/srv/htdocs/wp-…’) #10 /wordpress/core/5.6/wp-admin/ admin.php(34): require_once(‘/wordpress/core…’) #11 /wordpress/core/5.6/wp-admin/ index.php(10): require_once(‘/wordpress/core…’) #12 {main} thrown Viewing 4 replies - 1 through 4 (of 4 total) * Plugin Author [Daniele Scasciafratte](https://wordpress.org/support/users/mte90/) * (@mte90) * [5 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-in-css_customizer-php/#post-13845423) * Hi, it is a bug of the premium version, so you could open a ticket on [https://support.codeat.co/](https://support.codeat.co/) * Anyway seems a bug because a parameter is not configured in the plugin but I will find a workaround. * Plugin Author [Daniele Scasciafratte](https://wordpress.org/support/users/mte90/) * (@mte90) * [5 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-in-css_customizer-php/#post-13845440) * I am releasing a new version with a bugfix. * Thread Starter [Mark Drovdahl](https://wordpress.org/support/users/mdrovdahl/) * (@mdrovdahl) * [5 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-in-css_customizer-php/#post-13845445) * Thanks [@mte90](https://wordpress.org/support/users/mte90/). I’ll test your update( when released) and report back =) * Thread Starter [Mark Drovdahl](https://wordpress.org/support/users/mdrovdahl/) * (@mdrovdahl) * [5 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-in-css_customizer-php/#post-13845606) * V2.0.2 solved it. Thanks [@mte90](https://wordpress.org/support/users/mte90/) and a happy new year to you =) Viewing 4 replies - 1 through 4 (of 4 total) The topic ‘Fatal error in Css_Customizer.php’ is closed to new replies. * ![](https://ps.w.org/glossary-by-codeat/assets/icon-256x256.png?rev=1889092) * [Glossary](https://wordpress.org/plugins/glossary-by-codeat/) * [Frequently Asked Questions](https://wordpress.org/plugins/glossary-by-codeat/#faq) * [Support Threads](https://wordpress.org/support/plugin/glossary-by-codeat/) * [Active Topics](https://wordpress.org/support/plugin/glossary-by-codeat/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/glossary-by-codeat/unresolved/) * [Reviews](https://wordpress.org/support/plugin/glossary-by-codeat/reviews/) * 4 replies * 2 participants * Last reply from: [Mark Drovdahl](https://wordpress.org/support/users/mdrovdahl/) * Last activity: [5 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-in-css_customizer-php/#post-13845606) * Status: resolved