Array to string conversion bug

  • In WP 5.4 / PHP 7.3.16, the following notice is logged.

    You can check using the Query Monitor plugin, or enable debug logs.

    Notice: Array to string conversion

    wp-content/plugins/selfhost-google-fonts/inc/process.php:416
array_diff()
wp-content/plugins/selfhost-google-fonts/inc/process.php:416
Sphere\SGF\Process->remove_fonts_prefetch()
wp-includes/class-wp-hook.php:289
apply_filters('wp_resource_hints')
wp-includes/general-template.php:3212
wp_resource_hints()
wp-includes/class-wp-hook.php:287
do_action('wp_head')
wp-includes/general-template.php:2884
wp_head()
wp-content/themes/givingpress-lite/header.php:27
load_template('wp-content/themes/givingpress-lite/header.php')
wp-includes/template.php:672
locate_template()
wp-includes/general-template.php:41
get_header()
wp-content/themes/givingpress-lite/page.php:9
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