Trying to get property of non-object

I get the following when a user logs into the site and then goes to the VirtueMart store with something in the cart.  What does this mean?  I have Joomla 1.59, Latest SEF

Notice: Trying to get property of non-object in /var/www/vhosts/pilotjourney.com/httpdocs/components/com_virtuemart/sef_ext.php on line 478

Notice: Trying to get property of non-object in /var/www/vhosts/pilotjourney.com/httpdocs/components/com_virtuemart/sef_ext.php on line 482

Notice: Trying to get property of non-object in /var/www/vhosts/pilotjourney.com/httpdocs/components/com_virtuemart/sef_ext.php on line 485

Notice: Trying to get property of non-object in /var/www/vhosts/pilotjourney.com/httpdocs/components/com_virtuemart/sef_ext.php on line 486

Just turn off the notices. They are not errors and should not be displayed. There are several ways of doing it but one of the easiest are setting error reporting to Simple in Joomla global configurations.

Gee that sounds familiar ... you told this to once already and for some reason it did not register.

You gotta love us users   As much as we love our users   In other words we know what you go through....

Thanks for understanding. I don't mind repeating unless I have a bad day.