Multiple ‘array to string conversion’ warnings caused by plugin

  • Please notify OneSignal plugin coders of this problem.

    We’re getting a lot of PHP warnings, caught by the Query Monitor plugin, caused by OneSignal plugin:

    Warning Array to string conversion, 8x
    wp-includes/formatting.php:1096
    wp_check_invalid_utf8()
    esc_attr()
    sanitize_post_field()
    WP_Post->__get()
    onesignal_metabox()
    do_meta_boxes()
    Plugin: onesignal-free-web-push-notifications
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