error occurred script mail_php php' line 296:
I'm getting an error on line 296 of mail_php.php
This error appears whenever I try to send an email using shop_billing.inc.php (line 215)
What is causing the error?
Here's a list of the files (see private attachments):
root/includes/shop_billing.inc.php
root/webassist/email/mail_php.php
root/webassist/email/mailformatting_php.php
root/webassist/email/waue_request-callback_1.php
root/webassist/email/templates/request_callback.php
root/webassist/email/templates/css_emails.php