Support » Plugin: Custom Sidebars - Dynamic Widget Area Manager » Error: cURL error 28: Operation timed out after 10001 milliseconds with 0 bytes

  • Resolved dramasamy


    In my site, Site Health is showing below error in critical issue,

    Error: cURL error 28: Operation timed out after 10001 milliseconds with 0 bytes received (http_request_failed)

    While researching, I disabled all plugins in my site and enabled one by one. I come to know that Custom sidebar plugin is creating this issue.

    Only after enabling custom sidebar, I’m getting this error. please advise how to resolve it.

    Information about my environment:
    Wordpress version – 5.4.1
    Server Info: Apache
    PHP Version: 7.3.18 Enabled
    MySQL version: 5.7.25

    The page I need help with: [log in to see the link]

Viewing 4 replies - 1 through 4 (of 4 total)
  • Plugin Support Jonathan – WPMU DEV Support


    Hello @dramasamy

    I hope you’re doing well!

    I’m sorry to see that you have this issue. I could not replicate the same issue on my end. The error shows that the loopback request to your site failed. The loopback checks itself a remote post to your admin URL. Warning that is shown might the related to PHP sessions, which is triggered only on admin pages.

    Fiest, please try deactivating PHP sessions from Custom Sideboards, add this line to the wp-config.php file:
    define( 'WDEV_USE_SESSION', false );

    Make sure this line is added above /* That's all, stop editing! Happy blogging. */.

    Also please have a look at this explanation:

    Let us know how it went!

    Kind regards,



    Hi @wpmudev-support9 ,

    Great.! Above solution resolved my issue.

    Thank you so much.!

    Dhamodaran R



    Not using this plugin but followed the above advice. As a result 2 critical errors instead of 1:

    REST API and the new one – loopback

    • This reply was modified 5 months ago by Imago.
    Plugin Contributor Kasia – WPMU DEV Support


    Hello @dramasamy ,

    I’m not sure if I understand correctly your message. You are not using the Custom Sidebars plugins but you used the code provided?
    This code is only for the Custom Sidebars plugin, I advise to remove it.

    If another plugin is causing similar issue please contact developer of that plugin.

    kind regards,

Viewing 4 replies - 1 through 4 (of 4 total)
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