wpsnoop: fix Chicago theme conflicts, errors & issues

When the theme Chicago conflicts or throws a PHP error we hope wpsnoop can help you to fix the issue quickly.

Discover which shortcodes wp-options PHP functions database tables and files are created by Chicago, plus learn which plugins and/or themes could be in conflict with Chicago.

Troubleshooting theme and plugin conflicts is easier when you know what Chicago leaves behind after uninstalling it from a WordPress installation, there is a list down below for your convenience.

Expert advice is recommended if you are not technically proficient with PHP, MySQL etc. View support options for Chicago

Database Issues

0
ShortCode Issues

0
Function Issues

0
File System Issues

0
Get professional support for Chicago here

When you need professional help with WordPress: get help here

What does Chicago version 1.6 add to WordPress? Answers Here.

This is an automatically generated report - it is possible for Chicago to perform differently in your installation, previous versions before 1.6 may have created a different set of shortcodes, used different function names or could have created entirely different database tables to store settings and operate. This is not an exhaustive list but shows how version 1.6 of Chicago behaves when installed and removed on a clean installation of WordPress.

We have not tested individual shortcodes, features or settings of this theme but instead have concentrated on the potential for obvious errors and conflicts which can occur, if you need help with the plugin in your local installation you can get WordPress help and support for Chicago by clicking here.

Our testing covered the free version of this theme there may or may not be a paid version or premium version available for purchase that unlocks additional features and could behave in a slightly or very different manner.

Summary of WordPress theme analysis: Chicago

Theme Slug: chicago Internal ID: 106087 Addon Type: > Theme Version: 1.6 Price: Free Source: WordPress.org Files: 93 (1.50MB) Short Codes: [ / ] 0 Database Tables: 0 Function Count: 105
Do you need help with Chicago? Get professional theme support here in no time at all

Which new files does Chicago add to WordPress?

This section will populate with a table showing an icon, size and filepath.

Type & Path Size Conflicts
wp-content/themes/chicago/ 1.50MB No known conflicts with other themes or plugins.
wp-content/themes/chicago/404.php 1.98kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/archive.php 1.29kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/comments.php 3.03kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/content-none.php 1.09kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/content-page.php 925.00B No known conflicts with other themes or plugins.
wp-content/themes/chicago/content-search.php 850.00B No known conflicts with other themes or plugins.
wp-content/themes/chicago/content-single.php 889.00B No known conflicts with other themes or plugins.
wp-content/themes/chicago/content.php 1.43kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/css/ 196.61kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/css/blocks.css 13.69kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/css/colors/ 5.27kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/css/colors/dark.css 3.18kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/css/colors/light.css 2.08kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/css/editor-blocks.css 14.92kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/css/editor-style.css 2.78kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/css/genericons/ 159.95kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/css/genericons/genericons.css 27.60kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/css/genericons/Genericons.eot 21.85kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/css/genericons/Genericons.svg 75.18kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/css/genericons/Genericons.ttf 21.67kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/css/genericons/Genericons.woff 13.66kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/footer.php 804.00B No known conflicts with other themes or plugins.
wp-content/themes/chicago/functions.php 13.57kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/header.php 1.85kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/images/ 860.77kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/images/default-image.jpg 243.14kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/images/gallery/ 614.04kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/images/gallery/featured1-350x197.jpg 31.69kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/images/gallery/featured2-350x197.jpg 12.18kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/images/gallery/featured3-350x197.jpg 28.18kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/images/gallery/featured4-350x197.jpg 22.51kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/images/gallery/no-featured-image-1680x720.jpg 44.41kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/images/gallery/slider1-1680x720.jpg 253.71kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/images/gallery/slider2-1680x720.jpg 221.37kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/images/logo.png 3.60kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/ 145.54kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/breadcrumb.php 7.50kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/custom-header.php 12.35kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/customizer-includes/ 45.53kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/customizer-includes/customizer-active-callbacks.php 3.14kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/customizer-includes/customizer-custom-controls.php 3.08kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/customizer-includes/customizer-featured-content-options.php 6.58kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/customizer-includes/customizer-featured-slider-options.php 5.86kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/customizer-includes/customizer-header-options.php 2.62kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/customizer-includes/customizer-sanitize-functions.php 5.98kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/customizer-includes/customizer-theme-options.php 13.22kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/customizer-includes/upgrade-button/ 5.05kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/customizer-includes/upgrade-button/class-customize.php 2.40kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/customizer-includes/upgrade-button/customize-controls.css 985.00B No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/customizer-includes/upgrade-button/customize-controls.js 334.00B No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/customizer-includes/upgrade-button/section-pro.php 1.37kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/customizer.php 7.71kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/default-options.php 12.66kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/extras.php 16.07kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/featured-content.php 11.24kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/featured-slider.php 8.47kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/jetpack.php 1.39kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/metabox.php 5.17kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/structure.php 10.01kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/template-tags.php 6.22kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/inc/widgets.php 1.23kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/index.php 1.34kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/js/ 89.17kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/js/custom-scripts.js 626.00B No known conflicts with other themes or plugins.
wp-content/themes/chicago/js/customizer-custom-scripts.js 1.62kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/js/customizer.js 1.02kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/js/jquery.cycle/ 26.12kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/js/jquery.cycle/jquery.cycle2.flip.min.js 1.33kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/js/jquery.cycle/jquery.cycle2.min.js 22.37kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/js/jquery.cycle/jquery.cycle2.scrollVert.min.js 360.00B No known conflicts with other themes or plugins.
wp-content/themes/chicago/js/jquery.cycle/jquery.cycle2.tile.min.js 2.07kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/js/navigation.js 2.90kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/js/scrollup.js 455.00B No known conflicts with other themes or plugins.
wp-content/themes/chicago/js/skip-link-focus-fix.js 750.00B No known conflicts with other themes or plugins.
wp-content/themes/chicago/js/source/ 55.73kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/js/source/jquery.cycle/ 55.73kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/js/source/jquery.cycle/jquery.cycle2.flip.js 2.86kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/js/source/jquery.cycle/jquery.cycle2.js 47.75kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/js/source/jquery.cycle/jquery.cycle2.scrollVert.js 540.00B No known conflicts with other themes or plugins.
wp-content/themes/chicago/js/source/jquery.cycle/jquery.cycle2.tile.js 4.59kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/languages/ 20.41kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/languages/chicago.pot 20.41kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/page.php 991.00B No known conflicts with other themes or plugins.
wp-content/themes/chicago/readme.txt 10.25kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/screenshot.png 114.69kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/search.php 1.08kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/searchform.php 818.00B No known conflicts with other themes or plugins.
wp-content/themes/chicago/sidebar-footer.php 1.45kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/sidebar-promotion-headline.php 2.12kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/sidebar.php 3.17kB No known conflicts with other themes or plugins.
wp-content/themes/chicago/single.php 828.00B No known conflicts with other themes or plugins.
wp-content/themes/chicago/style.css 57.13kB No known conflicts with other themes or plugins.

Which new shortcodes does Chicago add to WordPress?

Which new database tables are created by the WordPress theme Chicago?

Which new options are added to the wp-options table by Chicago?

Option Name   Known Conflicts
current_theme Potential conflict with 8753 plugins or themes
theme_mods_twentytwentytwo Potential conflict with 8767 plugins or themes
theme_switched Potential conflict with 8753 plugins or themes
theme_mods_chicago The theme_mods_chicago option doesn't have any known conflicts with other themes or plugins.

During use Chicago may or may not create more options depending on how the theme is configured and depending on which other themes and plugins are active in your specific hosting environment.

What new PHP functions does Chicago declare when it is active?

Function   Conflicts Common Errors
chicago_add_breadcrumb 0 conflicts Fatal error: Cannot redeclare chicago_add_breadcrumb()
chicago_admin_header_image 0 conflicts Fatal error: Cannot redeclare chicago_admin_header_image()
chicago_admin_header_style 0 conflicts Fatal error: Cannot redeclare chicago_admin_header_style()
chicago_alter_home 0 conflicts Fatal error: Cannot redeclare chicago_alter_home()
chicago_archive_content_image 0 conflicts Fatal error: Cannot redeclare chicago_archive_content_image()
chicago_block_editor_styles 0 conflicts Fatal error: Cannot redeclare chicago_block_editor_styles()
chicago_body_classes 0 conflicts Fatal error: Cannot redeclare chicago_body_classes()
chicago_categorized_blog 0 conflicts Fatal error: Cannot redeclare chicago_categorized_blog()
chicago_category_transient_flusher 0 conflicts Fatal error: Cannot redeclare chicago_category_transient_flusher()
chicago_color_list 0 conflicts Fatal error: Cannot redeclare chicago_color_list()
chicago_color_schemes 0 conflicts Fatal error: Cannot redeclare chicago_color_schemes()
chicago_content_end 0 conflicts Fatal error: Cannot redeclare chicago_content_end()
chicago_content_start 0 conflicts Fatal error: Cannot redeclare chicago_content_start()
chicago_content_width 0 conflicts Fatal error: Cannot redeclare chicago_content_width()
chicago_continue_reading 0 conflicts Fatal error: Cannot redeclare chicago_continue_reading()
chicago_copyright 0 conflicts Fatal error: Cannot redeclare chicago_copyright()
chicago_custom_breadcrumbs 0 conflicts Fatal error: Cannot redeclare chicago_custom_breadcrumbs()
chicago_custom_css 0 conflicts Fatal error: Cannot redeclare chicago_custom_css()
chicago_custom_css_migrate 0 conflicts Fatal error: Cannot redeclare chicago_custom_css_migrate()
chicago_custom_header_setup 0 conflicts Fatal error: Cannot redeclare chicago_custom_header_setup()
chicago_customize_preview_js 0 conflicts Fatal error: Cannot redeclare chicago_customize_preview_js()
chicago_customize_register 0 conflicts Fatal error: Cannot redeclare chicago_customize_register()
chicago_customize_scripts 0 conflicts Fatal error: Cannot redeclare chicago_customize_scripts()
chicago_default_color_options 0 conflicts Fatal error: Cannot redeclare chicago_default_color_options()
chicago_demo_content 0 conflicts Fatal error: Cannot redeclare chicago_demo_content()
chicago_demo_slider 0 conflicts Fatal error: Cannot redeclare chicago_demo_slider()
chicago_display_logo 0 conflicts Fatal error: Cannot redeclare chicago_display_logo()
chicago_doctype 0 conflicts Fatal error: Cannot redeclare chicago_doctype()
chicago_enable_featured_header_image_options 0 conflicts Fatal error: Cannot redeclare chicago_enable_featured_header_image_options()
chicago_entry_footer 0 conflicts Fatal error: Cannot redeclare chicago_entry_footer()
chicago_excerpt_length 0 conflicts Fatal error: Cannot redeclare chicago_excerpt_length()
chicago_featured_content_display 0 conflicts Fatal error: Cannot redeclare chicago_featured_content_display()
chicago_featured_content_display_position 0 conflicts Fatal error: Cannot redeclare chicago_featured_content_display_position()
chicago_featured_content_layout_options 0 conflicts Fatal error: Cannot redeclare chicago_featured_content_layout_options()
chicago_featured_content_show 0 conflicts Fatal error: Cannot redeclare chicago_featured_content_show()
chicago_featured_content_types 0 conflicts Fatal error: Cannot redeclare chicago_featured_content_types()
chicago_featured_image 0 conflicts Fatal error: Cannot redeclare chicago_featured_image()
chicago_featured_image_display 0 conflicts Fatal error: Cannot redeclare chicago_featured_image_display()
chicago_featured_image_size_options 0 conflicts Fatal error: Cannot redeclare chicago_featured_image_size_options()
chicago_featured_overall_image 0 conflicts Fatal error: Cannot redeclare chicago_featured_overall_image()
chicago_featured_page_post_image 0 conflicts Fatal error: Cannot redeclare chicago_featured_page_post_image()
chicago_featured_slide_transition_effects 0 conflicts Fatal error: Cannot redeclare chicago_featured_slide_transition_effects()
chicago_featured_slider 0 conflicts Fatal error: Cannot redeclare chicago_featured_slider()
chicago_featured_slider_image_loader 0 conflicts Fatal error: Cannot redeclare chicago_featured_slider_image_loader()
chicago_featured_slider_options 0 conflicts Fatal error: Cannot redeclare chicago_featured_slider_options()
chicago_featured_slider_types 0 conflicts Fatal error: Cannot redeclare chicago_featured_slider_types()
chicago_flush_transients 0 conflicts Fatal error: Cannot redeclare chicago_flush_transients()
chicago_footer_content_end 0 conflicts Fatal error: Cannot redeclare chicago_footer_content_end()
chicago_footer_content_start 0 conflicts Fatal error: Cannot redeclare chicago_footer_content_start()
chicago_footer_info 0 conflicts Fatal error: Cannot redeclare chicago_footer_info()
chicago_footer_sidebar 0 conflicts Fatal error: Cannot redeclare chicago_footer_sidebar()
chicago_footer_sidebar_class 0 conflicts Fatal error: Cannot redeclare chicago_footer_sidebar_class()
chicago_get_archive_content_layout 0 conflicts Fatal error: Cannot redeclare chicago_get_archive_content_layout()
chicago_get_default_theme_options 0 conflicts Fatal error: Cannot redeclare chicago_get_default_theme_options()
chicago_get_first_image 0 conflicts Fatal error: Cannot redeclare chicago_get_first_image()
chicago_get_logo 0 conflicts Fatal error: Cannot redeclare chicago_get_logo()
chicago_get_pagination_types 0 conflicts Fatal error: Cannot redeclare chicago_get_pagination_types()
chicago_head 0 conflicts Fatal error: Cannot redeclare chicago_head()
chicago_header_end 0 conflicts Fatal error: Cannot redeclare chicago_header_end()
chicago_header_right 0 conflicts Fatal error: Cannot redeclare chicago_header_right()
chicago_header_start 0 conflicts Fatal error: Cannot redeclare chicago_header_start()
chicago_header_style 0 conflicts Fatal error: Cannot redeclare chicago_header_style()
chicago_is_demo_featured_content_inactive 0 conflicts Fatal error: Cannot redeclare chicago_is_demo_featured_content_inactive()
chicago_is_demo_slider_inactive 0 conflicts Fatal error: Cannot redeclare chicago_is_demo_slider_inactive()
chicago_is_featured_content_active 0 conflicts Fatal error: Cannot redeclare chicago_is_featured_content_active()
chicago_is_slider_active 0 conflicts Fatal error: Cannot redeclare chicago_is_slider_active()
chicago_jetpack_logo 0 conflicts Fatal error: Cannot redeclare chicago_jetpack_logo()
chicago_jetpack_setup 0 conflicts Fatal error: Cannot redeclare chicago_jetpack_setup()
chicago_layouts 0 conflicts Fatal error: Cannot redeclare chicago_layouts()
chicago_logo 0 conflicts Fatal error: Cannot redeclare chicago_logo()
chicago_logo_migrate 0 conflicts Fatal error: Cannot redeclare chicago_logo_migrate()
chicago_metabox_featured_image_options 0 conflicts Fatal error: Cannot redeclare chicago_metabox_featured_image_options()
chicago_metabox_header_featured_image_options 0 conflicts Fatal error: Cannot redeclare chicago_metabox_header_featured_image_options()
chicago_metabox_layouts 0 conflicts Fatal error: Cannot redeclare chicago_metabox_layouts()
chicago_page_content 0 conflicts Fatal error: Cannot redeclare chicago_page_content()
chicago_page_end 0 conflicts Fatal error: Cannot redeclare chicago_page_end()
chicago_page_slider 0 conflicts Fatal error: Cannot redeclare chicago_page_slider()
chicago_page_start 0 conflicts Fatal error: Cannot redeclare chicago_page_start()
chicago_posted_on 0 conflicts Fatal error: Cannot redeclare chicago_posted_on()
chicago_primary_menu 0 conflicts Fatal error: Cannot redeclare chicago_primary_menu()
chicago_profile 0 conflicts Fatal error: Cannot redeclare chicago_profile()
chicago_promotion_headline 0 conflicts Fatal error: Cannot redeclare chicago_promotion_headline()
chicago_reset_data 0 conflicts Fatal error: Cannot redeclare chicago_reset_data()
chicago_sanitize_category_list 0 conflicts Fatal error: Cannot redeclare chicago_sanitize_category_list()
chicago_sanitize_checkbox 0 conflicts Fatal error: Cannot redeclare chicago_sanitize_checkbox()
chicago_sanitize_custom_css 0 conflicts Fatal error: Cannot redeclare chicago_sanitize_custom_css()
chicago_sanitize_image 0 conflicts Fatal error: Cannot redeclare chicago_sanitize_image()
chicago_sanitize_number_range 0 conflicts Fatal error: Cannot redeclare chicago_sanitize_number_range()
chicago_sanitize_page 0 conflicts Fatal error: Cannot redeclare chicago_sanitize_page()
chicago_sanitize_select 0 conflicts Fatal error: Cannot redeclare chicago_sanitize_select()
chicago_scripts 0 conflicts Fatal error: Cannot redeclare chicago_scripts()
chicago_scrollup 0 conflicts Fatal error: Cannot redeclare chicago_scrollup()
chicago_seperator 0 conflicts Fatal error: Cannot redeclare chicago_seperator()
chicago_setup 0 conflicts Fatal error: Cannot redeclare chicago_setup()
chicago_single_content_image 0 conflicts Fatal error: Cannot redeclare chicago_single_content_image()
chicago_single_post_image_layout_options 0 conflicts Fatal error: Cannot redeclare chicago_single_post_image_layout_options()
chicago_site_banner_end 0 conflicts Fatal error: Cannot redeclare chicago_site_banner_end()
chicago_site_banner_start 0 conflicts Fatal error: Cannot redeclare chicago_site_banner_start()
chicago_site_branding_end 0 conflicts Fatal error: Cannot redeclare chicago_site_branding_end()
chicago_site_branding_start 0 conflicts Fatal error: Cannot redeclare chicago_site_branding_start()
chicago_site_title_description 0 conflicts Fatal error: Cannot redeclare chicago_site_title_description()
chicago_social_menu 0 conflicts Fatal error: Cannot redeclare chicago_social_menu()
chicago_the_post_navigation 0 conflicts Fatal error: Cannot redeclare chicago_the_post_navigation()
chicago_the_posts_navigation 0 conflicts Fatal error: Cannot redeclare chicago_the_posts_navigation()
chicago_widgets_init 0 conflicts Fatal error: Cannot redeclare chicago_widgets_init()

Using Chicago from the command line with WP-CLI

The following commands are provided for convenience and should only be used if you understand how WP-CLI works. These commands refer to a single WordPress instance and may need to be modified if you are working with a Multisite installation.

How to install Chicago from the command line with WP-CLI

Navigate to the root of your WordPress installation and type the following command:

wp theme install chicago

How to activate Chicago from the command line with WP-CLI

To immediately activate Chicago after WP-CLI downloads the latest version you can use the following command:

wp theme install chicago --activate

How to reinstall Chicago from the command line with WP-CLI

To force a reinstallation of Chicago which overwrites the current plugin without asking for confirmation you can use the following command:

wp theme install chicago --force

How to update Chicago to the latest version from the command line with WP-CLI

wp theme update chicago

How to delete Chicago from the command line with WP-CLI

wp theme delete chicago --force

Where can you download earlier versions of Chicago?

Whenever possible you should use the latest version of plugins and themes, however if you have recently updated and discovered that you need to install an earlier version you may be able to download other versions of Chicago from the WordPress repository by visiting this link.

Please note that installing earlier versions of a theme or plugin is not generally a recommended course of action for most users and could re-introduce security, stability or other issues in Chicago

About our testing enviroment

Tests were conducted using Apache 2.4.29, PHP 7.2 on Ubuntu 18.04, MySQL 5.7.33 and WordPress 5.9

It is very possible that different versions of PHP such as PHP 8.0, PHP 7.4, or PHP 7.3 could behave differently with Chicago. Different versions of WordPress could implement the features of this plugin in slightly different ways as well.