Trying to get property 'post_type' of non-object

[ronilaukkarinen]

Line 27 causes a notice in gutenberg.php.

Steps to reproduce:

1. Make sure debug is on:

Config::define( 'SAVEQUERIES', true );
Config::define( 'WP_DEBUG', true );
Config::define( 'WP_DEBUG_DISPLAY', true );
Config::define( 'WP_DISABLE_FATAL_ERROR_HANDLER', true );
Config::define( 'SCRIPT_DEBUG', true );
Config::define( 'FS_METHOD', 'direct' );
Config::define( 'PLL_CACHE_HOME_URL', false );

ini_set( 'display_errors', '1' );

// Enable plugin and theme updates and installation from the admin
Config::define( 'DISALLOW_FILE_MODS', false );

2. Make sure Laps and wps are installed
3. Go to wp-admin/customize.php
4. See this notice.