Bugs with CPT and taxonomy PHP code

Custom post type "Get PHP Code":

'icon_type'           => dashicons,
'icon'                 => dashicons-location-alt,
...
'menu_icon'            => '',

These lines are invalid because 1- 'icon_type' and 'icon' are not valid; 2- strings need to be quoted, like 'dashicons-location-alt'; 3- setting 'menu_icon' to '' makes no icon display in the admin menu.

Custom taxonomy "Get PHP Code":

'meta_box_cb' => true,

This line causes the taxonomy terms not to display on the edit post page the Classic editor. It should be set to false.