Did you change your site root? It looks like you have:
<?php require_once('../../webassist/mysqli/rsobj.php'); ?>
<?php require_once('../webassist/mysqli/rsobj.php'); ?>
My guess is an updated site root caused the reference to be repeated. You only need one of those (the one that is in the root of the site)
The Prepare() error is probably a bad connection. The details page uses a connection in the folder:
<?php require_once('../../Connections/funnel.php'); ?>
but the update page uses:
<?php require_once('../Connections/funnel.php'); ?>
My guess is that the connection information is different (wrong) in the update page version.