PHP Fatal error with Version 2.4.0

When version 2.4.0 of the plugin is enabled, I get 500 server error with following error logging:

PHP Fatal error: Uncaught Error: Call to a member function has_cap() on null in …/wp-content/plugins/gutenberg/lib/register.php:436
Stack trace:
#0 …/wp-includes/class-wp-hook.php(286): gutenberg_register_post_types(”)
#1 …/wp-includes/class-wp-hook.php(310): WP_Hook->apply_filters(NULL, Array)
#2 …/wp-includes/plugin.php(453): WP_Hook->do_action(Array)
#3 …/wp-settings.php(450): do_action(‘init’)
#4 …/wp-config.php(86): require_once(‘/home/143657.cl…’)
#5 …/wp-load.php(37): require_once(‘/home/143657.cl…’)
#6 …/wp-admin/admin.php(31): require_once(‘/home/143657.cl…’)
#7 …/wp-content/plugins/gutenberg/lib/register.php on line 436

Please help with this issue.
Thanks!