Debug Error

I am using a photo field in my module like so

'bg_image' => array(
'type'          => 'photo',
'label'         => __('Choose Tab Background Image', 'fl-builder'),
'show_remove'	=> true,

And then because it is in a repeatable form I am calling it to the frontend like so

foreach ($forms as $form) { 
$tabbg = $form->bg_image_src;
echo '<div style="background-image:'.$tabbg.';"></div>';

Everything works fine, however if I have debug enabled I get this error
Notice: Undefined property: stdClass::$bg_image_src

Can you post a dump of your $settings object for this module?