Conflict: fatal error displayed when trying to customize site page with Simple WordPress Membership plugin active

[adamdunnage]

Bug Description

A fatal error is displayed when trying to customize a site page as admin when both Site Kit and the Simple WordPress Membership plugin are active.

This has been reported in the support forum here and is reproducible on a test site as seen in the attached recording and screenshots below.

A recording of this happening can be seen here: https://www.loom.com/share/33e04f53c42246e1b9c58214f3b5b81a

The error is as follows:

Fatal error:  Uncaught Error: Call to undefined function Google\Site_Kit\Core\Util\get_plugin_data() in /s2-lastteam/wordpress/wp-content/plugins/google-site-kit/includes/Core/Util/Auto_Updates.php:103
Stack trace:
#0 /s2-lastteam/wordpress/wp-content/plugins/google-site-kit/includes/Core/Util/Auto_Updates.php(54): Google\Site_Kit\Core\Util\Auto_Updates::sitekit_forced_autoupdates_status()
#1 /s2-lastteam/wordpress/wp-content/plugins/google-site-kit/includes/Core/Authentication/Authentication.php(912): Google\Site_Kit\Core\Util\Auto_Updates::is_plugin_autoupdates_enabled()
#2 /s2-lastteam/wordpress/wp-content/plugins/google-site-kit/includes/Core/Util/Method_Proxy_Trait.php(25): Google\Site_Kit\Core\Authentication\Authentication->inline_js_base_data()
#3 /s2-lastteam/wordpress/wp-includes/class-wp-hook.php(308): Google\Site_Kit\Core\Authentication\Authentication->Google\Site_Kit\Core\Util\{closure}()
#4 /s2-lastteam/wordpress/wp-includes/plugin.php(205): WP_Hook->apply_filters()
#5 /s2-lastteam/wordpress/wp-content/plugins/google-site-kit/includes/Core/Assets/Assets.php(737): apply_filters()
#6 /s2-lastteam/wordpress/wp-content/plugins/google-site-kit/includes/Core/Assets/Assets.php(355): Google\Site_Kit\Core\Assets\Assets->get_inline_base_data()
#7 [internal function]: Google\Site_Kit\Core\Assets\Assets->Google\Site_Kit\Core\Assets\{closure}()
#8 /s2-lastteam/wordpress/wp-content/plugins/google-site-kit/includes/Core/Assets/Script_Data.php(51): call_user_func()
#9 [internal function]: Google\Site_Kit\Core\Assets\Script_Data->Google\Site_Kit\Core\Assets\{closure}()
#10 /s2-lastteam/wordpress/wp-content/plugins/google-site-kit/includes/Core/Assets/Asset.php(129): call_user_func()
#11 /s2-lastteam/wordpress/wp-content/plugins/google-site-kit/includes/Core/Assets/Assets.php(1014): Google\Site_Kit\Core\Assets\Asset->before_print()
#12 /s2-lastteam/wordpress/wp-content/plugins/google-site-kit/includes/Core/Assets/Assets.php(1023): Google\Site_Kit\Core\Assets\Assets->run_before_print_callbacks()
#13 /s2-lastteam/wordpress/wp-content/plugins/google-site-kit/includes/Core/Assets/Assets.php(1023): Google\Site_Kit\Core\Assets\Assets->run_before_print_callbacks()
#14 /s2-lastteam/wordpress/wp-content/plugins/google-site-kit/includes/Core/Assets/Assets.php(1023): Google\Site_Kit\Core\Assets\Assets->run_before_print_callbacks()
#15 /s2-lastteam/wordpress/wp-content/plugins/google-site-kit/includes/Core/Assets/Assets.php(154): Google\Site_Kit\Core\Assets\Assets->run_before_print_callbacks()
#16 /s2-lastteam/wordpress/wp-includes/class-wp-hook.php(308): Google\Site_Kit\Core\Assets\Assets->Google\Site_Kit\Core\Assets\{closure}()
#17 /s2-lastteam/wordpress/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()
#18 /s2-lastteam/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action()
#19 /s2-lastteam/wordpress/wp-includes/script-loader.php(2146): do_action()
#20 /s2-lastteam/wordpress/wp-includes/class-wp-hook.php(308): wp_print_head_scripts()
#21 /s2-lastteam/wordpress/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()
#22 /s2-lastteam/wordpress/wp-includes/plugin.php(517): WP_Hook->do_action()
#23 /s2-lastteam/wordpress/wp-includes/general-template.php(3049): do_action()
#24 /s2-lastteam/wordpress/wp-content/themes/twentytwenty/header.php(23): wp_head()
#25 /s2-lastteam/wordpress/wp-includes/template.php(783): require_once('/s2-lastteam/wo...')
#26 /s2-lastteam/wordpress/wp-includes/template.php(718): load_template()
#27 /s2-lastteam/wordpress/wp-includes/general-template.php(48): locate_template()
#28 /s2-lastteam/wordpress/wp-content/themes/twentytwenty/index.php(17): get_header()
#29 /s2-lastteam/wordpress/wp-includes/template-loader.php(106): include('/s2-lastteam/wo...')
#30 /s2-lastteam/wordpress/wp-blog-header.php(19): require_once('/s2-lastteam/wo...')
#31 /s2-lastteam/wordpress/index.php(17): require('/s2-lastteam/wo...')
#32 {main}
  thrown in /s2-lastteam/wordpress/wp-content/plugins/google-site-kit/includes/Core/Util/Auto_Updates.php on line 103

Steps to reproduce

1. Install the Simple WordPress Membership plugin on a site with Site Kit already active and set up.
2. Navigate to one of the sites pages while logged in as admin.
3. Select the customize option.

Screenshots

Additional Context

• PHP Version:
• OS: [e.g. iOS]
• Browser: [e.g. chrome, safari]
• Plugin Version: [e.g. 22]
• Device: [e.g. iPhone6]

---

Do not alter or remove anything below. The following sections will be managed by moderators only.

Acceptance criteria

Implementation Brief

Test Coverage

QA Brief

Changelog entry

[mxbclang]

Note: The 3 point estimate here is for initial investigation as part of escalation. When a solution is identified, this issue should move back to definition, ACs and IBs should be added, and estimate should be updated accordingly.