Fatal error on my site

  • creative8512

    (@creative8512)


    7 years, 7 months ago

    [ Moderator note: title adjusted, please refrain from using help, urgent, emergency, asap, etc. in topic titles. Topic moved to How-to and Troubleshooting. ]

    Hi,

    So my clients website basically got hacked and we’ve just managed to get it back to normal, in the process of doing so, I keep getting this error message.

    Fatal error: Call to undefined function add_filter() in /homepages/14/d645475266/htdocs/clickandbuilds/ballybolina/wp-includes/default-filters.php on line 17

    I have tried other suggestions within this forum, however not worked.

    Can anyone help please? I am at my wits end and not all too familiar with the backend of wordpress. If any other information is needed, please do let me know, I will try my best to provide it.

    Many Thanks

    • This topic was modified 7 years, 7 months ago by creative8512.
    • This topic was modified 7 years, 7 months ago by Jan Dembowski. Reason: Move to How-To and Troubleshooting
Viewing 15 replies - 1 through 15 (of 29 total)
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  • Moderator Steven Stern (sterndata)

    (@sterndata)

    Volunteer Forum Moderator

    7 years, 7 months ago

    My bet is that when you replaced WordPress core files, you missed one or two.

    Get a fresh copy of WordPress from wordpress.org, unzip locally, and upload via FTP.

    Thread Starter creative8512

    (@creative8512)

    7 years, 7 months ago

    i’ve just tried that again too, I’m still getting the same message 🙁

    Moderator Steven Stern (sterndata)

    (@sterndata)

    Volunteer Forum Moderator

    7 years, 7 months ago

    add_filter is a core function defined in wp-includes/plugin.php. Is that file there and readable?

    Thread Starter creative8512

    (@creative8512)

    7 years, 7 months ago

    Yes that one is there and readable

    Moderator Steven Stern (sterndata)

    (@sterndata)

    Volunteer Forum Moderator

    7 years, 7 months ago

    Let’s back up a bit. How did you fix the hack?

    Thread Starter creative8512

    (@creative8512)

    7 years, 7 months ago

    My website host ran a scan and emailed me all the files that I needed to delete, they then told me to install a fresh wordpress file from the wordpress website and change passwords, I did this, and now it has lead me to here.

    Thread Starter creative8512

    (@creative8512)

    7 years, 7 months ago

    Sorry, I also had to re upload the theme files, after they did the scan. There was nothing wrong and I was able to log in, until I installed a newer version of wordpress.

    Moderator Steven Stern (sterndata)

    (@sterndata)

    Volunteer Forum Moderator

    7 years, 7 months ago

    until I installed a newer version of wordpress.

    so you were on a version of WP earlier than 4.6 and it worked, then you upgraded and it broke?

    Thread Starter creative8512

    (@creative8512)

    7 years, 7 months ago

    I’m guessing that’s what happened..

    Moderator Steven Stern (sterndata)

    (@sterndata)

    Volunteer Forum Moderator

    7 years, 7 months ago

    Please provide a link to your site! Thanks.

    Thread Starter creative8512

    (@creative8512)

    7 years, 7 months ago

    http://s645475267.websitehome.co.uk/

    Thank you

    Moderator Steven Stern (sterndata)

    (@sterndata)

    Volunteer Forum Moderator

    7 years, 7 months ago

    What files did the host tell you to delete?

    Did you replace *all* wordpress files with the ones you downloaded?

    Thread Starter creative8512

    (@creative8512)

    7 years, 7 months ago

    As far am i’m aware, I replaced all files.
    Please see list below of files that I was told to.

    ./clickandbuilds/ballybolina/wp-content/plugins/LayerSlider/demos/functions.php
    ./clickandbuilds/ballybolina/wp-content/plugins/js_composer/config/start13.php
    ./clickandbuilds/ballybolina/wp-content/plugins/js_composer/include/templates/shortcodes/vc_tabs.php
    ./clickandbuilds/ballybolina/wp-content/plugins/forms-contact/hugeit_contact_function/alias.php
    ./clickandbuilds/ballybolina/wp-content/plugins/ninja-forms/deprecated/classes/step-processing.php
    ./clickandbuilds/ballybolina/wp-content/plugins/ninja-forms/includes/Config/Example.php
    ./clickandbuilds/ballybolina/wp-content/themes/nouveau-2/phpini.php
    ./clickandbuilds/ballybolina/wp-includes/Requests/Exception/HTTP/press.php
    ./clickandbuilds/ballybolina/wp-includes/images/wlw/sql.php
    ./clickandbuilds/ballybolina/wp-includes/js/mediaelement/dir11.php
    ./clickandbuilds/ballybolina/wp-includes/js/jquery/ui/article11.php
    ./clickandbuilds/ballybolina/dashboard.php

    Moderator Steven Stern (sterndata)

    (@sterndata)

    Volunteer Forum Moderator

    7 years, 7 months ago

    In this position, I think treating this site as still hacked is the way to go.

    • make a list of all plugins
    • delete everything in wp-content/plugins and wp-content/themes, /wp-admin and wp-includes — do not touch wp-content/uploads
    • delete all .php files in the doucment root except wp-config.php
    • (check that file to make sure it doesn’t have “odd” stuff in it
    • re-upload wordpress via FTP
    • login and reinstall all your plugins and your theme (from a clean source)

    Carefully follow this guide. When you’re done, you may want to implement some (if not all) of the recommended security measures.

    [edit: fixed directory name mistakes]

    Moderator Jose Castaneda

    (@jcastaneda)

    THEME COFFEE MONKEY

    7 years, 7 months ago

    That is super odd.

    That function is created in the plugin.php file which is called from the wp-settings file as seen in line 23 ( https://core.trac.wordpress.org/browser/tags/4.6/src/wp-settings.php#L23 )

    I’m guessing you can’t login either?

    How did you re-install WordPress?

Viewing 15 replies - 1 through 15 (of 29 total)
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