Doesn't seem to be related to the 1.31 upgrade - it's happened up to a few times a day over the past month

Malformed gateway definition. Cannot continue: Aborting.\nIngenico: Requested value IPADDRESS cannot be found in the transactions structure.

payments.error-20190301.gz:6
payments.error-20190302.gz:0
payments.error-20190303.gz:16
payments.error-20190304.gz:0
payments.error-20190305.gz:0
payments.error-20190306.gz:0
payments.error-20190307.gz:22
payments.error-20190308.gz:8
payments.error-20190309.gz:10
payments.error-20190310.gz:8
payments.error-20190311.gz:10
payments.error-20190312.gz:0
payments.error-20190313.gz:6
payments.error-20190314.gz:0
payments.error-20190315.gz:0
payments.error-20190316.gz:18
payments.error-20190317.gz:0
payments.error-20190318.gz:14
payments.error-20190319.gz:4
payments.error-20190320.gz:6
payments.error-20190321.gz:14
payments.error-20190322.gz:0
payments.error-20190323.gz:0
payments.error-20190324.gz:0
payments.error-20190325.gz:12
payments.error-20190326.gz:4