Meta Box

I am actually visually setting up the Settings page and the field group (and fields). The code is something I copied and pasted by clicking the "Get PHP Code" button.

Settings page screenshot: https://d.pr/i/DLS3e6

Field group screenshot: https://d.pr/i/RmnsoZ

Settings page fields populated: https://d.pr/i/CMZMSs

I currently have "Max number of files" set to 1 for the Image-type field.

The following code isn't showing any output:

$value = rwmb_meta( 'settings_logo', ['object_type' => 'setting'], 'my_options' );
echo $value['url'];

I think the issue is that when Save Changes is not clicked even once soon after the plugin has been activated, the value is null and I need to check for that in the code.