Hi,
There is a conflict between the plugin Meta Box and uListing, both plugins use the Google Map Library and it happens the issue. If you want to use the Meta Box Map and remove the uListing Map, please add this code to the file functions.php in the theme folder or use the Code Snippets plugin.
add_action( 'admin_enqueue_scripts', function() {
wp_dequeue_script( 'stm-listing-vue-google-maps' );
} );