Ubercart

Error message

Notice: Trying to access array offset on value of type int in element_children() (line 6656 of /home/thefoxes/foxwebdevelopment.com/includes/common.inc).
Notice: Trying to access array offset on value of type int in element_children() (line 6656 of /home/thefoxes/foxwebdevelopment.com/includes/common.inc).
Deprecated function: implode(): Passing glue string after array is deprecated. Swap the parameters in drupal_get_feeds() (line 394 of /home/thefoxes/foxwebdevelopment.com/includes/common.inc).

Here's how to add custom fields to the Ubercart checkout screen and get the values to show up on Customer Invoices and Store Admin Emails.