Invalid function name error

  • steph888

    (@stephcloete)


    7 months, 3 weeks ago

    Hi everyone,

    I hope someone might be able to help me. I’m reviving an old blog of mine and installed a new theme, etc. as well as a handful of plugins I’ve used on numerous other websites without issue. This site of mine though has given me one issue after the other that I had to fix. The last one has left me scratching my head. At the bottom of every page I get this error code:

    call_user_func_array() expects parameter 1 to be a valid callback, function ‘wp_ob_end_flush_all’ not found or invalid function name in /home/thenevzs/public_html/wp-includes/class-wp-hook.php on line 324

    Though I’ve been working WordPress sites for a few years I’ve not learned as much as I would hope. If someone could help me make sense of this issue and maybe tell me how to fix it I would be ever grateful. The website can be found here: [ redundant link deleted ]

    Thanks

    Stephan

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

Viewing 2 replies - 1 through 2 (of 2 total)
  • Moderator threadi

    (@threadi)

    7 months, 3 weeks ago

    The function that is supposedly missing here has been part of WordPress Core for a long time. It is strange if it cannot be found.

    My recommendation would be to perform a manual update: https://wordpress.org/documentation/article/updating-wordpress/#manual-update – this should bring the core files up to date. Alternatively, you can also click on Re-Install in the backend under Updates, which does the same thing.

    Thread Starter steph888

    (@stephcloete)

    7 months, 3 weeks ago

    Hi,

    Thank you for the reply and I followed the manual update instructions. I went smoothly, but now there is a new error:

    Notice: ob_end_flush(): failed to send buffer of zlib output compression (0) in /home/thenevzs/public_html/wp-includes/functions.php on line 5471

    Any ideas? I haven’t reactivated the plugins since doing the manual update, so I don’t think it’s one of them.

Viewing 2 replies - 1 through 2 (of 2 total)

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