• After upgrading to WP 4.7, Subscribe2 (v10.21) stopped working – every time I publish a post, I see an error message “cURL error 28: Operation timed out after 1001 milliseconds with 0 bytes received,” or a blank screen with the following PHP warning message logged.

    [16-Dec-2016 07:22:51 UTC] PHP Warning: http_build_query(): Parameter 1 expected to be Array or Object. Incorrect value given in /home/XXXXX/www/wp/wp-includes/Requests/Transport/cURL.php on line 508

    The post itself is successfully published and the only issue is that an email notification is not sent – and everything works fine when I disable Subscribe2.

    Please let me know any potential solutions!


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  • @rinriki

    That’s a strange issue and not one I’m seeing. Subscribe2 doesn’t use the http_build_query() function directly either.

    Can you try re-installing WordPress from the Dashboard -> Updates page and see if that helps. Perhaps a core file is corrupt following the update.

    Thread Starter rinriki


    Thank you. Re-install from the Dashboard -> Updates page did not work. After a clean install of all the files and the database the issue has gone.

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