Reduce Unused CSS Solution with Critical CSS For WP 1.0.2

Does "Reduce Unused CSS Solution with Critical CSS For WP" work with WordPress 6.1.1 and PHP 8.1.12? A smoke test was performed on .

Summary

Errors
119PHP warnings
72PHP notices
No JavaScript exceptions
All test pages loaded successfully
No resource errors
Performance

Memory usage: 52.25 KiB
The average PHP memory usage increased by this amount after activating by the plugin.

Page speed impact: 0.228 seconds
The average page load time increased by this amount after activating the plugin.

Environment
WordPress version6.1.1
PHP version8.1.12
MySQL version10.6.10
PHP memory limit512M
Plugin Info
Last updated
Active installs 1,000+
WordPress.org page https://wordpress.org/plugins/critical-css-for-wp/
Badges

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Pages 5

Plugins ‹ Test site — WordPress

Page screenshot: Plugins ‹ Test site — WordPress
URL /wp-admin/plugins.php?plugin_status=all&paged=1&s
Requested URL /wp-admin/plugins.php?action=activate&plugin=critical-css-for-wp%2Fcritical-css-for-wp.php&plugin_status=all&paged=1&s&_wpnonce=92a6bfc68a
Aspect after-activation
HTTP status 200
Load time 3.113 s
Memory usage 8.75 MiB
JS errors None
Resource errors None

Critical CSS For WP

Page screenshot: Critical CSS For WP
URL /wp-admin/admin.php?page=critical-css-for-wp
Aspect menu-item
HTTP status 200
Load time 0.601 s
Memory usage 3.01 MiB
JS errors None
Resource errors None

Critical CSS For WP → Advance

Page screenshot: Critical CSS For WP → Advance
URL /wp-admin/admin.php?page=critical-css-for-wp&tab=advance
Aspect menu-item-tab
HTTP status 200
Load time 0.391 s
Memory usage 3.01 MiB
JS errors None
Resource errors None

Critical CSS For WP → Support

Page screenshot: Critical CSS For WP → Support
URL /wp-admin/admin.php?page=critical-css-for-wp&tab=support
Aspect menu-item-tab
HTTP status 200
Load time 0.382 s
Memory usage 3.02 MiB
JS errors None
Resource errors None

Test site – Just another WordPress site

Page screenshot: Test site – Just another WordPress site
URL /
Aspect front-page
HTTP status 200
Load time 0.221 s
Memory usage 3.03 MiB
JS errors None
Resource errors None

Benchmark

URL Load time Memory usage
Inactive Active Change Inactive Active Change
/wp-admin/index.php0.272 s0.541 s+0.269 s3.05 MiB3.1 MiB+ 51.79 KiB
/wp-admin/edit.php0.175 s0.314 s+0.139 s3.07 MiB3.17 MiB+ 96.47 KiB
/wp-admin/post-new.php0.749 s1.649 s+0.900 s4.97 MiB5.02 MiB+ 54.63 KiB
/wp-admin/upload.php0.662 s0.659 s-0.003 s2.99 MiB3.03 MiB+ 36.95 KiB
/wp-admin/options-writing.php0.167 s0.158 s-0.009 s2.99 MiB3.01 MiB+ 23.72 KiB
/wp-admin/media-new.php0.262 s0.245 s-0.017 s2.97 MiB3.02 MiB+ 49.27 KiB
/wp-admin/edit-tags.php?taxonomy=category0.185 s0.254 s+0.069 s2.98 MiB3.03 MiB+ 54.43 KiB
/wp-admin/post-new.php?post_type=page0.606 s1.610 s+1.004 s4.96 MiB5.01 MiB+ 48.88 KiB
/wp-admin/options-discussion.php0.207 s0.263 s+0.056 s2.97 MiB3.01 MiB+ 37.44 KiB
/wp-admin/edit-comments.php0.200 s0.261 s+0.061 s3 MiB3.04 MiB+ 36.37 KiB
/0.303 s0.341 s+0.038 s2.94 MiB3.03 MiB+ 84.88 KiB
Average 0.344 s0.572 s+0.228 s3.35 MiB3.41 MiB+ 52.25 KiB

Code Statistics

Note: Third-party libraries and minified JS/CSS files are excluded from these statistics where possible, so the numbers you see here may be lower than those reported by other tools.

PHP
CSS
JavaScript
Language % Lines of code Comment lines Files
PHP75.5%1,723835
CSS14.1%32281
JavaScript10.1%23131
JSON0.2%501
Total 2,281 94 8

PHP Code Analysis | More results »

Lines of code 1,754
Total complexity 348
Median class complexity 191.0
Median method complexity 6.0
Most complex class class_critical_css_for_wp
Most complex function ccwp_delay_js_html()
Classes 1
Methods 29
Functions 29

Additions

Things that the plugin adds to the site. This section is not intended to be comprehensive. The test tool only looks for a few specific types of added content.

Database Tables 1

Options wp_options 2

PHP Error Log 191 lines

[19-Dec-2022 15:08:51 UTC] PHP Notice:  Function is_feed was called <strong>incorrectly</strong>. Conditional query tags do not work before the query is run. Before then, they always return false. Please see <a href="https://wordpress.org/support/article/debugging-in-wordpress/">Debugging in WordPress</a> for more information. (This message was added in version 3.1.0.) in /wp-includes/functions.php on line 5835
[19-Dec-2022 15:08:51 UTC] PHP Notice:  Function is_feed was called <strong>incorrectly</strong>. Conditional query tags do not work before the query is run. Before then, they always return false. Please see <a href="https://wordpress.org/support/article/debugging-in-wordpress/">Debugging in WordPress</a> for more information. (This message was added in version 3.1.0.) in /wp-includes/functions.php on line 5835
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Notice:  Function is_feed was called <strong>incorrectly</strong>. Conditional query tags do not work before the query is run. Before then, they always return false. Please see <a href="https://wordpress.org/support/article/debugging-in-wordpress/">Debugging in WordPress</a> for more information. (This message was added in version 3.1.0.) in /wp-includes/functions.php on line 5835
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:51 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Notice:  Function is_feed was called <strong>incorrectly</strong>. Conditional query tags do not work before the query is run. Before then, they always return false. Please see <a href="https://wordpress.org/support/article/debugging-in-wordpress/">Debugging in WordPress</a> for more information. (This message was added in version 3.1.0.) in /wp-includes/functions.php on line 5835
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:52 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:53 UTC] PHP Notice:  Function is_feed was called <strong>incorrectly</strong>. Conditional query tags do not work before the query is run. Before then, they always return false. Please see <a href="https://wordpress.org/support/article/debugging-in-wordpress/">Debugging in WordPress</a> for more information. (This message was added in version 3.1.0.) in /wp-includes/functions.php on line 5835
[19-Dec-2022 15:08:53 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:53 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:53 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:53 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:53 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:53 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:53 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:53 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:53 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:53 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:53 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:53 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:53 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152
[19-Dec-2022 15:08:53 UTC] PHP Warning:  Undefined array key "exclude_delay_js" in /wp-content/plugins/critical-css-for-wp/includes/javascript/delay-js.php on line 152

(+91 more lines)
See also: All tests for this plugin, How to Hide the "Critical CSS For WP" Admin Menu