Mailchimp address field sync, error when one field is empty

Hi there,

I’m trying to send address info to Mailchimp but getting the below error:

 [FNAME] => Miguel
            [LNAME] => Ortiz
            [MMERGE3] => Array
                (
                    [addr1] => Test
                    [addr2] => 
                    [city] => 
                    [state] => London
                    [zip] => ID1 1QD
                    [country] => GB
                )

2021-09-14 13:36:03.763860 - ERROR --> GFMailChimp::process_feed(): Unable to add/update subscriber: Invalid Resource 
2021-09-14 13:36:03.768336 - ERROR --> GFMailChimp::process_feed(): Field errors when attempting subscription: Array
(
    [0] => Array
        (
            [field] => MMERGE3
            [message] => Please enter a complete address

I have 5 address lines and it would only work when the 5 of them have data. Is it possible to fix this so that it send the info even if they aren’t all filled?

Thanks

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