When opening a csv (.txt) file, created using the Views data export module, an error 500 appears.
On the hosting, there is an error in the logs:
Response header name '887 taxonomy_term' contains invalid characters, aborting request
Closed: cannot reproduce
1.1
Code
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
Hmmm...sounds like something really weird is going on there!
Feel free to re-open including an export of your view that's causing the issue, so that we can take a look to see if there's anything obviously going wrong there.