Why does Hunk search stops with "Invalid transport header line"?

[ddrillic]

Similar case to Why does my Hunk search partially completes then displays message "ChunkedOutputStreamReader: Invali...

We run a query in dev such as -

index=xxxx_claims | stats count

And we get the message -

ChunkedOutputStreamReader: Invalid transport header line

What can it be?

[rdagan_splunk]

Have you seen this solution to the issue:
https://answers.splunk.com/answers/206595/why-is-hunk-virtual-index-failing-and-getting-erro.html

[ddrillic]

Very interesting - it's working now. I'm not aware of anything that we changed that might have impacted it...