{"id":1201,"date":"2026-04-17T17:45:15","date_gmt":"2026-04-17T17:45:15","guid":{"rendered":"https:\/\/www.jolt.co.uk\/help\/wordpress-admin-critical-error-after-installing-a-page-builder-premium-plugin\/"},"modified":"2026-04-23T08:58:22","modified_gmt":"2026-04-23T08:58:22","slug":"wordpress-admin-critical-error-after-installing-a-page-builder-premium-plugin","status":"publish","type":"post","link":"https:\/\/www.jolt.co.uk\/help\/wordpress-admin-critical-error-after-installing-a-page-builder-premium-plugin\/","title":{"rendered":"WordPress admin critical error after installing a page builder premium plugin"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Description<\/h2>\n\n\n\n<p>A WordPress site may show a critical error in the admin area immediately after installing or enabling a premium page builder add-on. The issue may be caused by a compatibility mismatch between the core plugin and its premium extension, which triggered a PHP fatal error and prevented normal access to the WordPress back end.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Symptoms<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>You may see the WordPress \u2018critical error\u2019 message after installing or activating the premium add-on plugin. The problem typically affects the WordPress admin area, and parts of the site may stop loading correctly until the faulty plugin is disabled.<\/li>\n\n\n\n<li>This behaviour is consistent with a plugin compatibility problem, where the premium extension is not compatible with the installed version of the core plugin.<\/li>\n\n\n\n<li><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>PHP fatal error caused by a method declaration mismatch between the core plugin and the premium add-on plugin.<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">Solution<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Disable the premium add-on plugin to restore access to the site and WordPress admin area.<\/li>\n\n\n\n<li>Check that the core plugin and the premium add-on are on compatible versions before re-enabling them.<\/li>\n\n\n\n<li>If the issue returns after reactivation, update both plugins to matching supported versions recommended by the plugin vendor.<\/li>\n\n\n\n<li>If no compatible update is available, contact the plugin vendor\u2019s support team and provide the fatal error details so they can confirm the required version combination or supply a fix.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Description A WordPress site may show a critical error in the admin area immediately after installing or enabling a premium page builder add-on. The issue may be caused by a compatibility mismatch between the core plugin and its premium extension, which triggered a PHP fatal error and prevented normal access&hellip;<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-1201","post","type-post","status-publish","format-standard","hentry","category-wordpress"],"_links":{"self":[{"href":"https:\/\/www.jolt.co.uk\/help\/wp-json\/wp\/v2\/posts\/1201","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jolt.co.uk\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jolt.co.uk\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jolt.co.uk\/help\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jolt.co.uk\/help\/wp-json\/wp\/v2\/comments?post=1201"}],"version-history":[{"count":1,"href":"https:\/\/www.jolt.co.uk\/help\/wp-json\/wp\/v2\/posts\/1201\/revisions"}],"predecessor-version":[{"id":1202,"href":"https:\/\/www.jolt.co.uk\/help\/wp-json\/wp\/v2\/posts\/1201\/revisions\/1202"}],"wp:attachment":[{"href":"https:\/\/www.jolt.co.uk\/help\/wp-json\/wp\/v2\/media?parent=1201"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jolt.co.uk\/help\/wp-json\/wp\/v2\/categories?post=1201"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jolt.co.uk\/help\/wp-json\/wp\/v2\/tags?post=1201"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}