CAN not working with Debian 10.3

We have a c program that uses CAN and it works with Debian 9.5. When I updated the BBB to Debian 10.3, the CAN no longer works. Can anyone provide info on what changes were made to Debian 10.3 with respect to CAN? The UART still works but not CAN.
Thanks,
John

What steps are you trying to enable it?