TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, function "_wp_register_default_icon_collections" not found or invalid function name in /nas/content/live/iconelectrical/wp-includes/class-wp-hook.php:353
Stack trace:
#0 /nas/content/live/iconelectrical/wp-includes/class-wp-hook.php(377): WP_Hook->apply_filters(NULL, Array)
#1 /nas/content/live/iconelectrical/wp-includes/plugin.php(523): WP_Hook->do_action(Array)
#2 /nas/content/live/iconelectrical/wp-settings.php(771): do_action('init')
#3 /nas/content/live/iconelectrical/wp-config.php(119): require_once('/nas/content/li...')
#4 /nas/content/live/iconelectrical/wp-load.php(50): require_once('/nas/content/li...')
#5 /nas/content/live/iconelectrical/wp-blog-header.php(13): require_once('/nas/content/li...')
#6 /nas/content/live/iconelectrical/index.php(17): require('/nas/content/li...')
#7 {main}