[Hummingbird Pro] XML Import Fails

I import properties via FTP on an XML file. Random images fail to import when Hummingbird is active. If I disable the plugin – they work perfectly!

This is the error I get in the logs:

06:11:04 23rd January 2020 – AGENT_REF: 102708021570 – An error occurred whilst importing http://media2.jupix.co.uk/v3/clients/2708/properties/21562/IMG_21562_7_large.jpg. The error was as follows: cURL error 6: getaddrinfo() thread failed to start