WePay 2.2 Error

I am seeing multiple orders added in Zen-Cart for the same product, just seconds apart, using the WePay module. I also noticed that the author seems to no longer be supporting it.

In this case, two customers had the same issue.

http:\\blog.itskona.com\wepayerror.jpg

The errors in the logfile show:

[15-Feb-2015 19:17:25 UTC] PHP Fatal error: Call to undefined function zen_db_fetch_array() in /home/www/the-redacted-domain-name.com/store/ext/modules/payment/wepay/wepayipn.php on line 29

Has anyone else seen this problem?

Sorry, couldn't delete this post and have created one with the error and picture.