Support » Themes and Templates » That darn message again – Warning: Cannot modify header information

  • Hi
    I have been in this forum for 3 hours reading up on the solutions. I have removed the “spaces” on my pluggable-php file as suggested, still no joy!!

    I do not know php and used to program years ago.

    I cant seem to find the config file that you folks keep talking about.

    Also I went to each of the lines mentioned below but I do not know where to look for the “spaces” to remove.

    I have deactivated all my plug ins, does this still allow my site to be public?

    Please help, this is very frustrating as I have noted with the other posts

    Michael

    Warning: Cannot modify header information – headers already sent by (output started at /home2/quiltlov/public_html/wp-content/themes/ClubBlue/functions.php:9) in /home2/quiltlov/public_html/wp-login.php on line 287

    Warning: Cannot modify header information – headers already sent by (output started at /home2/quiltlov/public_html/wp-content/themes/ClubBlue/functions.php:9) in /home2/quiltlov/public_html/wp-login.php on line 299

    Warning: Cannot modify header information – headers already sent by (output started at /home2/quiltlov/public_html/wp-content/themes/ClubBlue/functions.php:9) in /home2/quiltlov/public_html/wp-includes/pluggable.php on line 689

    Warning: Cannot modify header information – headers already sent by (output started at /home2/quiltlov/public_html/wp-content/themes/ClubBlue/functions.php:9) in /home2/quiltlov/public_html/wp-includes/pluggable.php on line 690

    Warning: Cannot modify header information – headers already sent by (output started at /home2/quiltlov/public_html/wp-content/themes/ClubBlue/functions.php:9) in /home2/quiltlov/public_html/wp-includes/pluggable.php on line 691

    Warning: Cannot modify header information – headers already sent by (output started at /home2/quiltlov/public_html/wp-content/themes/ClubBlue/functions.php:9) in /home2/quiltlov/public_html/wp-includes/pluggable.php on line 692

    Warning: Cannot modify header information – headers already sent by (output started at /home2/quiltlov/public_html/wp-content/themes/ClubBlue/functions.php:9) in /home2/quiltlov/public_html/wp-includes/pluggable.php on line 693

    Warning: Cannot modify header information – headers already sent by (output started at /home2/quiltlov/public_html/wp-content/themes/ClubBlue/functions.php:9) in /home2/quiltlov/public_html/wp-includes/pluggable.php on line 694

    Warning: Cannot modify header information – headers already sent by (output started at /home2/quiltlov/public_html/wp-content/themes/ClubBlue/functions.php:9) in /home2/quiltlov/public_html/wp-includes/pluggable.php on line 697

    Warning: Cannot modify header information – headers already sent by (output started at /home2/quiltlov/public_html/wp-content/themes/ClubBlue/functions.php:9) in /home2/quiltlov/public_html/wp-includes/pluggable.php on line 698

    Warning: Cannot modify header information – headers already sent by (output started at /home2/quiltlov/public_html/wp-content/themes/ClubBlue/functions.php:9) in /home2/quiltlov/public_html/wp-includes/pluggable.php on line 699

    Warning: Cannot modify header information – headers already sent by (output started at /home2/quiltlov/public_html/wp-content/themes/ClubBlue/functions.php:9) in /home2/quiltlov/public_html/wp-includes/pluggable.php on line 700

    Warning: Cannot modify header information – headers already sent by (output started at /home2/quiltlov/public_html/wp-content/themes/ClubBlue/functions.php:9) in /home2/quiltlov/public_html/wp-includes/pluggable.php on line 703

    Warning: Cannot modify header information – headers already sent by (output started at /home2/quiltlov/public_html/wp-content/themes/ClubBlue/functions.php:9) in /home2/quiltlov/public_html/wp-includes/pluggable.php on line 704

    Warning: Cannot modify header information – headers already sent by (output started at /home2/quiltlov/public_html/wp-content/themes/ClubBlue/functions.php:9) in /home2/quiltlov/public_html/wp-includes/pluggable.php on line 705

    Warning: Cannot modify header information – headers already sent by (output started at /home2/quiltlov/public_html/wp-content/themes/ClubBlue/functions.php:9) in /home2/quiltlov/public_html/wp-includes/pluggable.php on line 706

    Warning: Cannot modify header information – headers already sent by (output started at /home2/quiltlov/public_html/wp-content/themes/ClubBlue/functions.php:9) in /home2/quiltlov/public_html/wp-includes/pluggable.php on line 865

Viewing 15 replies - 1 through 15 (of 16 total)
  • /ClubBlue/functions.php

    look at your theme’s functions.php file
    clear the empty space or line break at beginning of file or end of file (or both)

    I had the same problem as soon as I updated to the latest version and I did what Samboll just told you and it work. I thought I was the only one having that problem.

    Thank you folks.

    wanted to mention 2 things…

    1 – when I changed from one template to another the problem went away, which means these errors only happen on certain templates so I should let the designer know this.

    2 – went into functions.php of the problem template and there was no ?> at the end, so I held the delete button to get rid of any spaces that may exist then put in the ?>

    IT WORKED!!

    Thanks to all

    Michael

    Yeah, sometimes those spaces are not visible and are very easy to miss.

    Hi folk,

    I had been facing the same problem and so I tried ob_start(); in index.php file at line no 1.

    And it fixed the problem.

    Enjoys!!!!!!

    Reragds,
    Web-Farmer
    http://www.google.com/profiles/sachinpethani
    http://www.letsnurture.com

    I just wanted to add, I had the same problem when I did an upgrade, so I did what Samboll suggested above, but the theme file was fine. After I narrowed it down to one guilty plugin, I checked the main php file fore it and sure enough, there was an extra line break in it. I removed it and voila! So if a particular plugin is causing this error, try that. 🙂

    look at your theme’s functions.php file
    clear the empty space or line break at beginning of file or end of file (or both)

    it’s work, thank you samboll

    dmaniatis

    (@dmaniatis)

    same problem here. solved it after removing trailing spaces at end of wp-includes/query.php

    it is what is before <? or after ?> tags that cause this.

    spotlightingadmin

    (@spotlightingadmin)

    Almost same problem.

    Only appears with new users. Users who’d already registered don’t get the warning lines. (Two in this case.)

    Warning: Cannot modify header information – headers already sent by (output started at /home/name/public_html/wp-admin/includes/dashboard.php:1789) in /home/name/public_html/wp-includes/functions.php on line 784

    Every line of code in wp-admin/includes/dashboard.php is followed by a blank line.

    Should every blank line be deleted?

    Thought I’d ask for another opinion before we just go ahead and do this.

    spotlightingadmin

    (@spotlightingadmin)

    Every line of code in wp-admin/includes/dashboard.php is followed by a blank line.

    Should every blank line be deleted?

    P.S. Correction: appears with old and new users, but goes away after you open any other WP admin page after logging in.

    Here’s what appears;

    Warning: Cannot modify header information – headers already sent by (output started at /home/name/public_html/wp-admin/includes/dashboard.php:1789) in /home/name/public_html/wp-includes/functions.php on line 784

    Hi Everyone,

    Though none of the above & other solutions in the forums solved my issues.

    Out of frustration I copied all the code then pasted into sticky notes (linux)(Notepad Windows). I then re-copied the same code and pasted it back … SOLVED MY PROBLEMS !!

    Ignore my previous post,

    the same issue appeared again, I then pasted ob_start(); at the TOP of my functions.php file (Was the file generating the error messages)

    Just had the same issue after I added a new function to functions.php in my theme folder. So searched and tryed to get rid of all the invisible spaces. Didn’t work, so i searched further and everyone was keep telling me, remove te spaces. And again i removed them all… I thought, cause the third time, I cutted all the code out of the functions.php except for the function which the errorwarning came up with. And there, yes, a freaky ultra hidden space. 🙂

    And just like you laudes, the issue appeared again…

    I have found in wordpress.org and also 100 blogs and forums(may be). Every where are talking about white spaces. But, I have checked whole files. like
    wp-settings.php
    wp-admin.php
    wp-login.php
    query.php
    functions.php etc etc.. But I didnt solved this problem.

    It’s giving me the problem yet. I cant login to wp-admin. Help me about it.

    I almost have finished my blog in localhost. Suddenly, I have faced this problem. I am totally frustrated.

    Please help me.

Viewing 15 replies - 1 through 15 (of 16 total)
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