TypeError at Search Export Results

[JPdelaRosa83]

We found an issue when a card is set to multiple records allow and one of the record entered as "null" or "none" and we do a search export on this particular record it shows us this error:

The record that is causing the issue have multiple "null/none" records entered:

once we have deleted those records, we can then export the resource again with no issue.
Also note, that these records where uploaded on our database (ETL migration) and not entered directly from the Arches UI

FYI - this used to work on version 7.4.3 and we only came across this issue after upgrading to 7.5.1

Arches Version: 7.5.1
Python Version: 3.8
Web Browser: Chrome