502 Bad Gateway errors

  • Resolved ncorcoran

    (@ncorcoran)


    1 month, 1 week ago

    Issue Summary

    • The website frontend (normal pages) is generally loading as expected
    • However, dynamic requests via admin-ajax.php and wp-json are intermittently failing with 502 Bad Gateway errors
    • In addition, while browsing both the frontend and the admin panel, we are also experiencing intermittent 502 errors, although less frequently

    These issues are causing:

    • Admin panel instability
    • Failures in dynamic functionality
    • Intermittent disruption of the user experience

    Plugins Involved

    Through systematic troubleshooting, we have isolated the issue to your plugin ecosystem:

    • The Events Calendar
    • The Events Calendar Pro
    • Event Tickets
    • Event Tickets Plus

    When these plugins are disabled, the system becomes stable and the errors no longer occur.


    Troubleshooting Performed

    • Disabled all plugins and re-enabled them one by one on staging
    • Identified the above plugins as the source of instability
    • Monitored behavior using Query Monitor and server logs
    • Increased PHP memory [512 MB & WP_MAX_MEMORY_LIMIT: 1024MB] (improved behavior but did not resolve the issue)


    Observed Behavior

    • High load and failures on dynamic endpoints (admin-ajax.php, REST API)
    • Intermittent 502 errors during normal browsing (frontend and admin)
    • Increased memory usage and occasional spikes
    • Signs of PHP worker exhaustion under load

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

Viewing 4 replies - 1 through 4 (of 4 total)
  • Plugin Support Darian

    (@d0153)

    1 month, 1 week ago

    Hi @ncorcoran

    Thanks for your message, and for providing detailed information about this issue.

    Unfortunately, we cannot provide support in this forum for premium users.

    For us to help you better, please open a Support Ticket on our Help Desk.

    You’ll hear from one of my colleagues soon!

    Thread Starter ncorcoran

    (@ncorcoran)

    1 month, 1 week ago

    @d0153 Unfortunately, I do not have access to the account needed to submit a ticket on your helpdesk. The account may belong to the site owner or another dev, but I don’t have that access. I’m working on the site facialesthetics.org and can confirm from the backend that there is a pro subscription in use and would really appreciate help with this:

    Plugin Support tristan083

    (@tristan083)

    1 month, 1 week ago

    Hi @ncorcoran ,

    Thank you for your message, and we’re sorry to hear of your difficulties opening a ticket on our help desk. To comply with the WordPress Forum Guidelines regarding premium support, we are only able to assist you through our official help desk. You should be able to open Support Ticket without a need for an account.

    Plugin Support Darian

    (@d0153)

    1 month, 1 week ago

    Hi @ncorcoran

    Just to add, if you don’t currently have access to your premium account, you can include your license key when submitting your support ticket, and we’ll use that to verify your account accordingly. You can find this from your WP-admin dashboard > Events > Settings > Licenses.

    I’ll go ahead and close this ticket for now, but please feel free to open a support ticket through our Help Desk if you have any other questions or concerns.

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

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