PayPal Express recurring contributions are not recorded and no confirmation email is sent

An exception is thrown upon receiving an IPN for a PayPal Express recurring contribution.

The contribution is therefore not recorded and no confirmation email is sent.

There is nothing to indicate lack of support of this feature to a user defining an event who might enable recurring contributions and enable the PayPal Express payment processor.

I will submit a PR shortly.

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information