[Update: Resolved] Slack no longer supports PDF uploads

1 tweet with no verification by the HN poster or confirmation from Slack. Suddenly:

"Slack no longer supports PDF uploads".

Slack responded within 20 minutes of the tweet [1]:

> Hi Eric, we do still support PDFs! Can you try a different PDF and let us know if it gives the same error?

I checked myself - I can upload PDFs to slack still.

[1]: https://twitter.com/SlackHQ/status/1301217226507325443

Update - there was an intermittent error in the Linux client preventing Slack from reading or uploading PDFs. This has since been resolved.