No, no need.
The next step is to make sure your overrides are correct. Backup the original files:
/overrides/classes/Cart.php
/override/classes/CartRule.php
Then copy these files into that location
/modules/awocoupon/helper/override/[17]/classes/Cart.php
/modules/awocoupon/helper/override/[17]/classes/CartRule.php
I am assuming you are using the latest version of AwoCoupon.