Fatal Error by installing Metabox AIO

I need some help with the fatal error I get
For info:
Fresh WP install on Local by Flywheel.
I installed Metabox plugin and activated + MB AIO. When I activate the plugin I will have a Fatal Error.

Fatal error: Uncaught TypeError: Return value of RWMB_Update_Option::get_api_key() must be of the type string, null returned in /Users/digipartner/Local Sites/blueprintbricks/app/public/wp-content/plugins/meta-box/inc/update/option.php on line 28
( ! ) TypeError: Return value of RWMB_Update_Option::get_api_key() must be of the type string, null returned in /Users/digipartner/Local Sites/blueprintbricks/app/public/wp-content/plugins/meta-box/inc/update/option.php on line 28

Call Stack
# Time Memory Function Location
1 0.0033 538120 {main}( ) .../plugins.php:0
2 0.0040 582904 require_once( '/Users/digipartner/Local Sites/blueprintbricks/app/public/wp-admin/admin.php ) .../plugins.php:10
3 0.2735 47950616 do_action( $hook_name = 'admin_init' ) .../admin.php:175
4 0.2735 47950992 WP_Hook->do_action( $args = [0 => ''] ) .../plugin.php:517
5 0.2735 47950992 WP_Hook->apply_filters( $value = '', $args = [0 => ''] ) .../class-wp-hook.php:332
6 0.2755 48127064 _maybe_update_plugins( '' ) .../class-wp-hook.php:308
7 0.2756 48127064 wp_update_plugins( $extra_stats = ??? ) .../update.php:1020
8 0.2758 48130720 set_site_transient( $transient = 'update_plugins', $value = class stdClass { public $last_checked = 1670325054 }, $expiration = ??? ) .../update.php:391
9 0.2758 48130784 apply_filters( $hook_name = 'pre_set_site_transient_update_plugins', $value = class stdClass { public $last_checked = 1670325054 }, ...$args = variadic('update_plugins') ) .../option.php:2018
10 0.2758 48131192 WP_Hook->apply_filters( $value = class stdClass { public $last_checked = 1670325054 }, $args = [0 => class stdClass { public $last_checked = 1670325054 }, 1 => 'update_plugins'] ) .../plugin.php:205
11 0.2758 48132696 RWMB_Update_Checker->check_updates( $data = class stdClass { public $last_checked = 1670325054 } ) .../class-wp-hook.php:310
12 0.2759 48139432 RWMB_Update_Checker->request( $endpoint = 'plugins', $args = ??? ) .../checker.php:83
13 0.2759 48139432 RWMB_Update_Option->get_api_key( ) .../checker.php:135