Maciej Ma?kowiak

– Are you using the official AMP plugin?
Yes, version 2.0.11
When I’ve updated to version 2.1.2 the error was gone, but I think it should still be fixed
– At what stage do you encounter this error? Were you accessing the Stories dashboard, or opening the editor?
Oh, right sorry – I cannot access any AMP page, I’m using transitional mode.

Web stories plugin version 1.7.1 is working with the AMP WP 2.0.11
Looks like the issue is this change:
https://github.com/google/web-stories-wp/compare/v1.7.1…v1.7.2#diff-2b237f0c956393314644a70ed2a1e947e359d198526565d1ab813cc7a189250bR247

Yes, the whole object cache should not be cleared on every post/page update.
Only post related objects should be cleared on post update like for example here:
https://core.trac.www.ads-software.com/browser/tags/5.6.2/src/wp-includes/post.php#L6937

 wp_cache_delete( $post->ID, 'posts' );
wp_cache_delete( $post->ID, 'post_meta' );

clean_object_term_cache( $post->ID, $post->post_type );

wp_cache_delete( 'wp_get_archives', 'general' );

Thanks!

Thanks for quick support!

Hi,
Thanks for quick replay.

Version 0.13.1

And yes, you are of course right, I’ve copied wrong line from the logs, sorry about it.

Here is the culprit:
https://plugins.trac.www.ads-software.com/browser/w3-total-cache/tags/0.13.1/lib/OAuth/W3tcOAuth.php#L102
/plugins/w3-total-cache/lib/OAuth/W3tcOAuth.php(102)

Thanks

Thank you for quick fix(like always),
everything works perfectly!

Best regards
Maciej Ma?kowiak

Done.
And remote debugging is active for as long as You need.

Thanks for quick replay.

I’ve enabled remote debugging, but where can I send You a link?
Because I’d prefer not to share it in public.

perfect ??

it look like it does the trick, errors are gone ??

thanks

sorry @keraweb , i’ve haven’t seen that You replayed

steps to reproduce:
1. fresh wp install with just two – Your plugin and AMP
https://www.ads-software.com/plugins/amp/
2. template mode – Standard or Transitional – both produced an error
3. theme – Twenty SixteenVersion: 2.0
4. go to home page and click in wp admin bar -> AMP->AMP revalidate( https://imgur.com/a/ttU5cLy )

stack trace:
PHP Fatal error: Uncaught Error: Cannot use object of type Closure as array in /var/www/html/wp-content/plugins/widget-css-classes/includes/widget-css-classes.class.php:747
Stack trace:
#0 /var/www/html/wp-content/plugins/widget-css-classes/includes/widget-css-classes.class.php(469): WCSSC::get_widget_opt(Array)
#1 /var/www/html/wp-content/plugins/amp/includes/validation/class-amp-validation-manager.php(1544): WCSSC::add_widget_classes(Array)
#2 /var/www/html/wp-content/plugins/amp/includes/validation/class-amp-validation-manager.php(1254): AMP_Validation_Manager::{closure}(Array)
#3 /var/www/html/wp-includes/class-wp-hook.php(286): AMP_Validation_Manager::{closure}(Array)
#4 /var/www/html/wp-includes/plugin.php(208): WP_Hook->apply_filters(Array, Array)
#5 /var/www/html/wp-includes/widgets.php(738): apply_filters(‘dynamic_sidebar…’, Array)
#6 /var/www/html/wp-content/themes/twentysixteen/sidebar.php(13): dynamic_sidebar(‘sidebar-1’)
#7 /var/www/html/wp-includes/template.php(722): require_once(‘/var/www/html/w…’)
#8 /var/ in /var/www/html/wp-content/plugins/widget-css-classes/includes/widget-css-classes.class.php on line 747

hope it helps ??
best regards

i’ve got the same errornotice
and i think it is related to php 7.3
https://www.php.net/manual/en/function.compact.php

Changelog
Version Description
7.3.0 compact() now issues an E_NOTICE level error if a given string refers to an unset variable. Formerly, such strings have been silently skipped.

@keraweb any news?

thanks for replay,
so to check if it is not related with any other plugins i made a clean wordpress instalation with only Your plugin and AMP plugin

this error occurs once You click View AMP -> Re-validate link in wp admin bar https://imgur.com/a/LhyXubO

WP Version: 5.1.1
PHP Version: 7.3
Other plugins: AMP plugin
Theme: Twenty sixteen

best regards