PHP Fatal error: Uncaught Error: Class “WC_Settings_Page” not found

  • Resolved tharmann

    (@tharmann)


    2 years, 2 months ago

    Hello,

    We recently started getting the following fatal error originating from this plugin:

    [2024-03-25T16:17:37.468715+00:00] PHP Fatal error: Uncaught Error: Class “WC_Settings_Page” not found in /nas/content/live/mwprodsupply/wp-content/plugins/woo-mp/includes/settings-page.php:13#012Stack trace:#012#0 /nas/content/live/mwprodsupply/wp-content/plugins/woo-mp/includes/autoloader.php(62): require()#012#1 /nas/content/live/mwprodsupply/wp-includes/plugin.php(121): Woo_MP\Autoloader->autoload(‘Woo_MP\\Settings…’)#012#2 /nas/content/live/mwprodsupply/wp-content/plugins/woo-mp/includes/woo-mp.php(52): add_filter(‘woocommerce_get…’, Array)#012#3 /nas/content/live/mwprodsupply/wp-content/plugins/woo-mp/includes/woo-mp.php(22): Woo_MP\Woo_MP->init_hooks()#012#4 /nas/content/live/mwprodsupply/wp-content/plugins/woo-mp/includes/bootstrap.php(17): Woo_MP\Woo_MP->init()#012#5 /nas/content/live/mwprodsupply/wp-content/plugins/woo-mp/woo-mp.php(47): require(‘/nas/content/li…’)#012#6 /nas/content/live/mwprodsupply/wp-settings.php(473): include_once(‘/nas/content/li…’)#012#7 /nas/content/live/mwprodsupply/wp-config.php(122): require_once(‘/nas/content/li…’)#012#8 /nas/content/live/mwprodsupply/wp-load.php(50): require_once(‘/nas/content/li…’)#012#9 /nas/content/live/mwprodsupply/wp-admin/admin-ajax.php(22): require_once(‘/nas/content/li…’)#012#10 {main}#012 thrown in /nas/content/live/mwprodsupply/wp-content/plugins/woo-mp/includes/settings-page.php on line 13

    It must be a recent WooCommerce or WordPress version that’s causing this as the plugin had been working great for years. I temporarily fixed it by adding a class_exists( ‘WC_Settings_Page’ ) conditional around the add_filter on line 52 in the woo-mp/includes/woo-mp.php file. This, of course, seems to disable the settings page but the fatal error goes away and everything else seems to work.

    Thank you!

Viewing 13 replies - 1 through 13 (of 13 total)
  • Plugin Author bfl

    (@bfl)

    2 years, 2 months ago

    I’m not able to reproduce the issue on my test site. I’m going to look into this. Can you please send your Site Health info (“Copy site info to clipboard”) to bfl.wordpress.org@gmail.com?

    bobconan

    (@bobconan)

    2 years, 2 months ago

    We are having the same issues. Was causing critical error screens to come up when in the backend of the website.

    [2024-03-26T20:51:47.814281+00:00] PHP Fatal error: Uncaught Error: Class “WC_Settings_Page” not found in /nas/content/live/silentsoundsys/wp-content/plugins/woo-mp/includes/settings-page.php:13#012Stack trace:#012#0 /nas/content/live/silentsoundsys/wp-content/plugins/woo-mp/includes/autoloader.php(62): require()#012#1 /nas/content/live/silentsoundsys/wp-includes/plugin.php(121): Woo_MP\Autoloader->autoload(‘Woo_MP\Settings…’)#012#2 /nas/content/live/silentsoundsys/wp-content/plugins/woo-mp/includes/woo-mp.php(52): add_filter(‘woocommerce_get…’, Array)#012#3 /nas/content/live/silentsoundsys/wp-content/plugins/woo-mp/includes/woo-mp.php(22): Woo_MP\Woo_MP->init_hooks()#012#4 /nas/content/live/silentsoundsys/wp-content/plugins/woo-mp/includes/bootstrap.php(17): Woo_MP\Woo_MP->init()#012#5 /nas/content/live/silentsoundsys/wp-content/plugins/woo-mp/woo-mp.php(47): require(‘/nas/content/li…’)#012#6 /nas/content/live/silentsoundsys/wp-settings.php(473): include_once(‘/nas/content/li…’)#012#7 /nas/content/live/silentsoundsys/wp-config.php(137): require_once(‘/nas/content/li…’)#012#8 /nas/content/live/silentsoundsys/wp-load.php(50): require_once(‘/nas/content/li…’)#012#9 /nas/content/live/silentsoundsys/wp-admin/admin-ajax.php(22): require_once(‘/nas/content/li…’)#012#10 {main}#012 thrown in /nas/content/live/silentsoundsys/wp-content/plugins/woo-mp/includes/settings-page.php on line 13

    We have deleted the plugin, and issue seems to be resolved.

    Plugin Author bfl

    (@bfl)

    2 years, 2 months ago

    Interesting. This might be an issue with WP Engine. I notice both of you are using it.

    Here are some people talking about something that looks like the same issue:

    https://forum.bricksbuilder.io/t/wait-wp-list-table-error-on-wpengine/21201

    Can either of you post the exact code on line 121 of wp-includes/plugin.php on your server? I’m wondering if there’s some sort of modification to that file, because that line should not be triggering the autoloader.

    @tharmann: When you get a chance, send me the Site Health info. I want to see if there’s anything else in common between your site and bobconan’s.

    Thread Starter tharmann

    (@tharmann)

    2 years, 2 months ago

    Sure thing, here’s line 121 of wp-includes/plugin.php:

    function add_filter( $hook_name, $callback, $priority = 10, $accepted_args = 1 ) {

    And I’ll send over the site health info straight away.

    Thanks!

    Thread Starter tharmann

    (@tharmann)

    2 years, 2 months ago

    I’d like to add something that may help on your end as well: we have 3 sites running your plugin and all 3 are on WP Engine. Only 2 of the 3 are experiencing the fatal error issue. Those 2 are both on version 2.8.2 of your plugin and 8.7.0 of WooCommerce. The 1 that isn’t experiencing the fatal error is on version 2.8.1 of your plugin and 8.6.1 of WooCommerce.

    All 3 are running version version 6.4.3 of WordPress. Hope this helps!

    Plugin Author bfl

    (@bfl)

    2 years, 2 months ago

    I can’t figure out why this is happening, but I think I can fix it anyway.

    Try the development version I just uploaded (trunk):

    https://downloads.wordpress.org/plugin/woo-mp.zip

    That’s a direct download link.

    Let me know if that fixes the issue for you without disabling the settings page.

    Plugin Author bfl

    (@bfl)

    2 years, 2 months ago

    @tharmann: Have you had a chance to try out the patched version yet?

    Plugin Author bfl

    (@bfl)

    2 years, 2 months ago

    @bobconan: Would you be able to try out the patched version?

    https://downloads.wordpress.org/plugin/woo-mp.zip

    kylelarkin

    (@kylelarkin)

    2 years, 1 month ago

    Hi there, for what it’s worth, we were also experiencing the same errors on our WP Engine sites. In addition to the error message we were also experiencing a lot of issues with resource usage. This patched version appears to have fixed this issue for us. Thanks!

    Plugin Author bfl

    (@bfl)

    2 years, 1 month ago

    @kylelarkin, thank you for confirming that. I’ll include this change in the next version of the plugin.

    D.S. Webster

    (@dswebsme)

    2 years, 1 month ago

    @bfl The issue is not specific to WPEngine. It’s occurring on Pantheon as well. Both hosts support git based deployments. I’ve seen similar issues occur when a file is mistakingly ignored by git. I’m testing the patch you posted on a Pantheon deployed site now.

    UPDATE: Confirmed that the patched version works on Pantheon when deployed via Git.

    • This reply was modified 2 years, 1 month ago by D.S. Webster.
    Plugin Author bfl

    (@bfl)

    2 years, 1 month ago

    @dswebsme, thanks for confirming on Pantheon. I’m not sure what the issue is, but it doesn’t seem to be caused by a missing file.

    • This reply was modified 2 years, 1 month ago by bfl.
    Plugin Author bfl

    (@bfl)

    2 years, 1 month ago

    I’ve released an update that patches this issue.

    • This reply was modified 2 years, 1 month ago by bfl.
Viewing 13 replies - 1 through 13 (of 13 total)

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