Warning: Functions declared in the global namespace by a theme/plugin should start with the theme/plugin prefix. Found: "avif_headers_add_is_avif_headers_enabled_test".
Warning: Functions declared in the global namespace by a theme/plugin should start with the theme/plugin prefix. Found: "avif_headers_check_avif_headers_test".
Warning: Functions declared in the global namespace by a theme/plugin should start with the theme/plugin prefix. Found: "avif_headers_is_enabled".
Warning: Functions declared in the global namespace by a theme/plugin should start with the theme/plugin prefix. Found: "avif_uploads_add_is_avif_supported_test".
Warning: Functions declared in the global namespace by a theme/plugin should start with the theme/plugin prefix. Found: "avif_uploads_check_avif_supported_test".
Warning: Functions declared in the global namespace by a theme/plugin should start with the theme/plugin prefix. Found: "webp_uploads_add_is_webp_supported_test".
Warning: Functions declared in the global namespace by a theme/plugin should start with the theme/plugin prefix. Found: "webp_uploads_check_webp_supported_test".
Warning: Hook names invoked by a theme/plugin should start with the theme/plugin prefix. Found: "plugin_action_links_{$plugin_file}".
Warning: Hook names invoked by a theme/plugin should start with the theme/plugin prefix. Found: "plugin_install_description".
Warning: Mismatched text domain. Expected 'performance-lab' but got 'default'.
Warning: The "Contributors" header in the readme file contains reserved username(s). Found: "wordpressdotorg"