Support » Fixing WordPress » Critical Error uploading relatively small files

  • When I upload images to my media library with the browser uploader I usually get a critical error:

    There has been a critical error on this website. Please check your site admin email inbox for instructions.

    The website appears to crash, or with the multi file uploader, it appears to never finish. But if I refresh and view the media library, the image does successfully upload.

    This did not used to happen. I spoke to my web host and they previously suggested my file size was too large. And yes, I was able to upload a 72 KB image without getting the error, but I’m getting the error even with files as small as about 300 KB. And the wordpress max file size is 32 MB, so this seems very strange to me. I’m curious what potentially causes of this would be.

Viewing 13 replies - 1 through 13 (of 13 total)
  • Moderator Steven Stern (sterndata)

    (@sterndata)

    Forum Moderator & Support Team Rep

    Errors like this are logged. Check the error log on your server. If you can’t find the log, please contact your host.

    Meantime, enable wp_debug and wp_debug_log and after an error, look at wp-content/debug.log to see if anything gets logged there. https://wordpress.org/support/article/debugging-in-wordpress/

    You can also try this: Please attempt to disable all plugins, and use one of the default (Twenty*) themes. If the problem goes away, enable them one by one to identify the source of your troubles.

    If you cannot access wp-admin, there are other ways to deactivate plugins:  https://wordpress.org/support/article/faq-troubleshooting/#how-to-deactivate-all-plugins-when-not-able-to-access-the-administrative-menus

    Thread Starter Frisby

    (@frisby)

    Thanks Steven! I am definitely getting errors in the log from my parent theme — and unfortunately it seems like the person who made it may have gone MIA and stopped maintaining it. The dangers of relying on a third party, I suppose.

    If I disable plugins/themes to further troubleshoot, their settings are still saved, right?

    Moderator Steven Stern (sterndata)

    (@sterndata)

    Forum Moderator & Support Team Rep

    “If I disable plugins/themes to further troubleshoot, their settings are still saved, right?” Generally speaking, yes.

    Thread Starter Frisby

    (@frisby)

    Thanks for your help, I will give that a try.

    Thread Starter Frisby

    (@frisby)

    Interestingly I deactivated all plugins and switched to the WP 2017 theme and the problem persisted.

    Moderator Steven Stern (sterndata)

    (@sterndata)

    Forum Moderator & Support Team Rep

    what’s in the debug log?

    Thread Starter Frisby

    (@frisby)

    [31-Mar-2020 01:58:40 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [31-Mar-2020 01:58:40 UTC] PHP Warning:  Error while sending QUERY packet. PID=18776 in /var/www/ucc-lee.org/wp-includes/wp-db.php on line 2030
    [31-Mar-2020 01:58:51 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [31-Mar-2020 01:58:51 UTC] PHP Warning:  Error while sending QUERY packet. PID=18796 in /var/www/ucc-lee.org/wp-includes/wp-db.php on line 2030
    [31-Mar-2020 01:59:02 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [31-Mar-2020 01:59:02 UTC] PHP Warning:  Error while sending QUERY packet. PID=18821 in /var/www/ucc-lee.org/wp-includes/wp-db.php on line 2030
    [31-Mar-2020 01:59:29 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [31-Mar-2020 01:59:29 UTC] PHP Warning:  Error while sending QUERY packet. PID=18858 in /var/www/ucc-lee.org/wp-includes/wp-db.php on line 2030
    [31-Mar-2020 02:06:07 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [31-Mar-2020 02:06:07 UTC] PHP Warning:  Error while sending QUERY packet. PID=19536 in /var/www/ucc-lee.org/wp-includes/wp-db.php on line 2030
    [31-Mar-2020 02:11:03 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [31-Mar-2020 02:11:03 UTC] PHP Warning:  Error while sending QUERY packet. PID=24184 in /var/www/ucc-lee.org/wp-includes/wp-db.php on line 2030
    [31-Mar-2020 02:11:12 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [31-Mar-2020 02:11:12 UTC] PHP Warning:  Error while sending QUERY packet. PID=24203 in /var/www/ucc-lee.org/wp-includes/wp-db.php on line 2030
    [31-Mar-2020 02:20:45 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [31-Mar-2020 02:20:45 UTC] PHP Warning:  Error while sending QUERY packet. PID=25222 in /var/www/ucc-lee.org/wp-includes/wp-db.php on line 2030
    [16-Jul-2022 17:39:53 UTC] PHP Warning:  Creating default object from empty value in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/includes/framework/inc/class.redux_filesystem.php on line 29
    [16-Jul-2022 17:39:53 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [16-Jul-2022 17:58:59 UTC] PHP Warning:  Creating default object from empty value in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/includes/framework/inc/class.redux_filesystem.php on line 29
    [16-Jul-2022 17:58:59 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [17-Jul-2022 07:28:21 UTC] PHP Warning:  Creating default object from empty value in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/includes/framework/inc/class.redux_filesystem.php on line 29
    [17-Jul-2022 07:28:21 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [17-Jul-2022 07:28:22 UTC] PHP Warning:  Creating default object from empty value in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/includes/framework/inc/class.redux_filesystem.php on line 29
    [17-Jul-2022 07:28:23 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    Moderator Steven Stern (sterndata)

    (@sterndata)

    Forum Moderator & Support Team Rep

    If you disable the plugin “luvthemes-core” does this change?

    Thread Starter Frisby

    (@frisby)

    The error log and uploading problem does not change.

    A caveat, I did leave one plugin on during these tests which is Really Simple SSL – I wasn’t sure if I could safely turn that one on and off because it gave me a warning when I tried.

    Moderator Steven Stern (sterndata)

    (@sterndata)

    Forum Moderator & Support Team Rep

    This indicates some sort of database issue:

    “Error while sending QUERY packet.”

    Try repairing your database: https://www.a2hosting.com/kb/cpanel/cpanel-database-features/optimizing-and-repairing-mysql-databases-with-phpmyadmin

    When you’re having a critical error, a plugin is often to blame. If you have several or even dozens of plugins on your site, trying to locate the one that’s the issue may seem like a daunting task.

    But there’s an easy way to find the problem plugin: simply turn them all off and see if that fixes the problem. If it does, enable them one by one until your site breaks again. And there’s the culprit!

    Thread Starter Frisby

    (@frisby)

    Thanks both,

    Unfortunately still striking out over here. I did “repair database” but it wasn’t clear that anything was improved because I’m still having this upload issue.

    And I disabled all the plugins and switched to Twenty Seventeen theme again, but the problem exists even then.

    Here’s what the error log is saying now:

    [31-Mar-2020 01:58:40 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [31-Mar-2020 01:58:40 UTC] PHP Warning:  Error while sending QUERY packet. PID=18776 in /var/www/ucc-lee.org/wp-includes/wp-db.php on line 2030
    [31-Mar-2020 01:58:51 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [31-Mar-2020 01:58:51 UTC] PHP Warning:  Error while sending QUERY packet. PID=18796 in /var/www/ucc-lee.org/wp-includes/wp-db.php on line 2030
    [31-Mar-2020 01:59:02 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [31-Mar-2020 01:59:02 UTC] PHP Warning:  Error while sending QUERY packet. PID=18821 in /var/www/ucc-lee.org/wp-includes/wp-db.php on line 2030
    [31-Mar-2020 01:59:29 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [31-Mar-2020 01:59:29 UTC] PHP Warning:  Error while sending QUERY packet. PID=18858 in /var/www/ucc-lee.org/wp-includes/wp-db.php on line 2030
    [31-Mar-2020 02:06:07 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [31-Mar-2020 02:06:07 UTC] PHP Warning:  Error while sending QUERY packet. PID=19536 in /var/www/ucc-lee.org/wp-includes/wp-db.php on line 2030
    [31-Mar-2020 02:11:03 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [31-Mar-2020 02:11:03 UTC] PHP Warning:  Error while sending QUERY packet. PID=24184 in /var/www/ucc-lee.org/wp-includes/wp-db.php on line 2030
    [31-Mar-2020 02:11:12 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [31-Mar-2020 02:11:12 UTC] PHP Warning:  Error while sending QUERY packet. PID=24203 in /var/www/ucc-lee.org/wp-includes/wp-db.php on line 2030
    [31-Mar-2020 02:20:45 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [31-Mar-2020 02:20:45 UTC] PHP Warning:  Error while sending QUERY packet. PID=25222 in /var/www/ucc-lee.org/wp-includes/wp-db.php on line 2030
    [16-Jul-2022 17:39:53 UTC] PHP Warning:  Creating default object from empty value in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/includes/framework/inc/class.redux_filesystem.php on line 29
    [16-Jul-2022 17:39:53 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [16-Jul-2022 17:58:59 UTC] PHP Warning:  Creating default object from empty value in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/includes/framework/inc/class.redux_filesystem.php on line 29
    [16-Jul-2022 17:58:59 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [17-Jul-2022 07:28:21 UTC] PHP Warning:  Creating default object from empty value in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/includes/framework/inc/class.redux_filesystem.php on line 29
    [17-Jul-2022 07:28:21 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [17-Jul-2022 07:28:22 UTC] PHP Warning:  Creating default object from empty value in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/includes/framework/inc/class.redux_filesystem.php on line 29
    [17-Jul-2022 07:28:23 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [20-Jul-2022 02:06:55 UTC] PHP Warning:  Creating default object from empty value in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/includes/framework/inc/class.redux_filesystem.php on line 29
    [20-Jul-2022 02:06:56 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [20-Jul-2022 02:10:43 UTC] PHP Warning:  Creating default object from empty value in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/includes/framework/inc/class.redux_filesystem.php on line 29
    [20-Jul-2022 02:10:43 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [20-Jul-2022 11:23:44 UTC] PHP Warning:  Creating default object from empty value in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/includes/framework/inc/class.redux_filesystem.php on line 29
    [20-Jul-2022 11:23:44 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [20-Jul-2022 11:23:45 UTC] PHP Warning:  Creating default object from empty value in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/includes/framework/inc/class.redux_filesystem.php on line 29
    [20-Jul-2022 11:23:45 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [23-Jul-2022 17:45:36 UTC] PHP Warning:  Creating default object from empty value in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/includes/framework/inc/class.redux_filesystem.php on line 29
    [23-Jul-2022 17:45:37 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [23-Jul-2022 17:45:45 UTC] PHP Warning:  Creating default object from empty value in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/includes/framework/inc/class.redux_filesystem.php on line 29
    [23-Jul-2022 17:45:45 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295
    [23-Jul-2022 17:56:15 UTC] PHP Warning:  Creating default object from empty value in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/includes/framework/inc/class.redux_filesystem.php on line 29
    [23-Jul-2022 17:56:15 UTC] PHP Notice:  Undefined index: HTTP_HOST in /var/www/ucc-lee.org/wp-content/plugins/luvthemes-core/luvthemes-core.php on line 295

    I did receive a “timeout” error once while testing the upload, so I wonder if it’s something to do with the way my site is installed; I actually have 3 WP installs under 1 hosting account, each tied to subdomains. Could they be competing for resources or something?

    Moderator Steven Stern (sterndata)

    (@sterndata)

    Forum Moderator & Support Team Rep

    Hmmm… I’m now wondering if you’re exceeding the capacity of your MySQL server. Please ask your host to check its logs.

Viewing 13 replies - 1 through 13 (of 13 total)
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