Files with purl.oclc.org/ooxml schemas

[Kaylakaze]

I've got some excel files I'm trying to read that have Relationship Types that are like "http://purl.oclc.org/ooxml/officeDocument/relationships/officeDocument" instead of "http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument" and since Laravel Excel explicitly looks for the second type, my files can't be read.
Does anyone know what might be creating these files that use purl.oclc.org?

[patrickbrouwers]

I think Phpspreadsheet handles that part. Perhaps best to create a ticket there.