I can’t access my controlpanel due to Warning: Cannot modify header information

  • Warning: Cannot modify header information – headers already sent by (output started at /home/www/fancyskirts.dk/wp-content/plugins/easy-facebook-likebox/includes/easy-custom-facebook-feed-widget.php:3) in /home/www/fancyskirts.dk/wp-includes/pluggable.php on line 1210

    When I want to access my webpage/wp-admin, I get the above warning and error, instead of the control panel or the forwarding to the webpage/wp-login.php.

    Elsewhere in this forum it is mentioned that the warning and error is due to an extra space or line before <?php or after a closing?> php tag. But I haven’t made any changes to my wordpress, theme or plugins!

    I am only maintaining the webpage, i.e. clicking on update whenever there is a new version of a plugin, theme or, WP it self.

    I have also tried to delete plugins and themes, and then re-install all – one by one – in order to eliminate the error, but all plugins and themes (as well as child-theme) are re-installed and the error vanished.

    Well, that was until I tried to save a new post (or save an updated version of an existing post) then the warning and error re-appears, and I am back to “square one”.

    Any Idea of how to solve this problem?

Viewing 3 replies - 1 through 3 (of 3 total)

  • Hi there,

    There are several topics resolved with this issue. Did you try search?

    Hope it helps.

    Moderator Steven Stern (sterndata)

    (@sterndata)

    Volunteer Forum Moderator

    Delete the directory /home/www/fancyskirts.dk/wp-content/plugins/easy-facebook-likebox then reinstall that plugin to get the version that fixes this problem. You can use FTP or your hosting control panel’s file manager to delete the directory.

    Thread Starter Mikael Boldt

    (@boldt)

    Hi there,

    There are several topics resolved with this issue. Did you try search?

    Hope it helps.

    If you read my text you can see that I actually did, but didn’t find it relevant to search additional spaces or lines in php files. and that the other part of re-installing the plugins also failed.

    Delete the directory /home/www/fancyskirts.dk/wp-content/plugins/easy-facebook-likebox then reinstall that plugin to get the version that fixes this problem. You can use FTP or your hosting control panel’s file manager to delete the directory.

    .
    I tried to use my FTP to delete and reinstall the plugins. I have now tried to delete and re-install the plugins one more time, but this time doing the following

    1) delete all plugins using FTP
    2) visit controlpanel/ plugins not before this visit will the wp deactivate missing plugins
    3) upload fresh copies of the plugins using the controlpanel/plugins/add new
    4) activate the plugins one-by-one

    when I did this exercise one of the plugins came up with an error warning.

    It was the mentioned Easy Facebook Likebox, which where generating the problems.
    (i usually do not believe that autogenerated error message get the right plugin – My experience is that it can as easily be the one plugin loaded before or after the mentioned.)

    thank you very much for your input

    • This reply was modified 7 years, 8 months ago by Mikael Boldt.
Viewing 3 replies - 1 through 3 (of 3 total)
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