HELP -- Got System/Ajax Error after upgrading from version 3.1 to 3.2

Hi there,

Maian Greetings software has two errors/issues on my website: https://www.uswebcity.com/cards/

(1). After upgrading Maian Greetings from version 3.1 to 3.2 with (a commercial version), when I try to click on the Preview or Send Ecard button for sending an ecard, I get this System Error message below.

SYSTEM ERROR
A problem has occurred with the server request.
Please try again or view the logs to see if an error has been logged preventing the ajax request completing.

Here is my ecard's URL: https://www.uswebcity.com/cards/

(2). Also the "Upload Image" to send as an ecard feature is not working.
After I select an image from my computer, it does not show on the screen/ecard, so I cannot upload the image file.

Could you please help me to fix the two issues? So people are able to send ecards. Thank you very much.