Getting an error trying to go to PayPal

When I enter a registration and then click the PayPal button, I get the error
Unknown column 'coupon_usage_times' in 'field list'.

I get this error whether I have included a COUPON or not.

This is stopping registration for events on our site. Can you please assist.

Hi

Please login to administrator area of your site, access to Events Booking, then Tools -> Fix Database Schema

It should solve the issue

Regards,

Tuan