cUrl error when trying to download/publish pdf

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I’m trying to create a PDF from a post, but after selecting the post (a single post) and clicking “Donwload PDF” I get an error:

cURL error 28: Operation timed out after 5000 milliseconds with 0 bytes received

Not sure what this means or why, not doing anything different than I’ve done for all the others. Was on v2.4 and got an error:

Server error: POST resulted in a 522 response: <!DOCTYPE html> <!–[if lt IE 7]> <html class=”no-js ie6 oldie” lang=”en-US”> <![endif]–> <!–[if IE 7]> <html class (truncated…)

Then updated to v2.5, now get the curl error…

What can I do?

 

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